light 1 (l t)n.1. Physics a. Electromagnetic radiation that has a wavelength in the range from about 4,000 (violet) to about 7,700 (red) angstroms and may be perceived by the normal unaided human eye. b. Electromagnetic radiation of any wavelength. 2. The sensation of perceiving light; brightness: a sudden light that made me blink. 3. a. A source of light, especially a lamp, a lantern, or an electric lighting fixture: Turn out the lights when you leave. b. The illumination derived from a source of light: by the light of the moon. c. The particular quantity or quality of such illumination: moved the lamp closer to get better light. d. The pathway or route of such illumination to a person: You're standing in his light. 4. A mechanical device that uses illumination as a signal or warning, especially a beacon or traffic signal. 5. a. Daylight. b. Dawn; daybreak. 6. Something, such as a window, that admits illumination. 7. Architecture One of two or more openings in a window divided by a mullion or mullions. 8. A source of fire, such as a match or cigarette lighter. 9. Spiritual awareness; illumination. 10. a. Something that provides information or clarification: threw some light on the question. b. A state of awareness or understanding, especially as derived from a particular source: in the light of experience. 11. Public attention; general knowledge: brought the scandal to light. 12. A way of looking at or considering a matter; an aspect: saw the situation in a different light. 13. Archaic Eyesight. 14. lights One's individual opinions, choices, or standards: acted according to their own lights. 15. A person who inspires or is adored by another: My daughter is the light of my life. 16. A prominent or distinguished person; a luminary: one of the leading lights of the theater. 17. An expression of the eyes: a strange light in her eyes. 18. Light In Quaker doctrine, the guiding spirit or divine presence in each person. 19. The representation of light in art. v. light·ed or lit (l t), light·ing, lights v.tr.1. To set on fire; ignite or kindle. 2. To cause to give out light; make luminous: lit a lamp. 3. To provide, cover, or fill with light; illuminate: fireworks lighting the sky. 4. To signal, direct, or guide with or as if with illumination. 5. To enliven or animate: A smile lit her face. v.intr.1. To start to burn; be ignited or kindled: Green wood does not light easily. 2. To emit light; be lighted: Wait until the indicator lights up. adj. light·er, light·est 1. a. Having a greater rather than lesser degree of lightness. b. Of or being an additive primary color. 2. Characterized by or filled with light; bright: a room that is light when the shutters are open. 3. Not dark in color; fair: light hair and skin. 4. Served with milk or cream. Used of coffee. Phrasal Verb: light up1. To become or cause to become animated or cheerful. 2. To start smoking a cigarette, cigar, or pipe. Idioms: in (the) light of In consideration of; in relationship to. light a fire under To urge or move to action. light at the end of the tunnel The prospect of success, relief, or escape after strenuous effort.
[Middle English, from Old English l oht, lht; see leuk- in Indo-European roots.] Usage Note: Lighted and lit are equally acceptable as past tense and past participle of light. Both forms are also well established as adjectives: a lighted (or lit) candle. |
light 1 Noun 1. the natural medium, electromagnetic radiation, that makes sight possible 2. anything that illuminates, such as a lamp or candle 4. a particular type of light: dim yellow light 5. a. daylight b. daybreak; dawn 6. anything that lets in light, such as a window 7. an aspect or view: we have seen the world in a new light 8. mental understanding or spiritual insight: suddenly he saw the light 9. an outstanding person: a leading light of the movement 10. brightness of countenance, esp. a sparkle in the eyes 11. a. something that ignites, such as a spark or flame b. something used for igniting, such as a match 13. come to light to become known or visible 14. in (the) light of taking into account 15. see the light to understand 16. see the light (of day) a. to come into being b. to come to public notice Adjective 1. full of light 2. (of a colour) pale: light blue Verb [lighting, lighted] or lit 1. to ignite 2. (often foll. by up)to illuminate or cause to illuminate 3. to guide by light lightish adj
light 2 Adjective 1. not heavy; weighing relatively little 2. relatively low in density, strength, amount, degree, etc.: light oil, light alloy 3. lacking sufficient weight 4. not bulky or clumsy: light bedclothes 5. not serious or difficult to understand; entertaining: light music 6. graceful or agile: light movements 7. without strong emphasis or serious meaning: he gazed about with a light inattentive smile 8. easily digested: a light lunch 9. relatively low in alcohol: a light wine 10. without burdens, difficulties, or problems: a light heart lives longest 11. dizzy or unclear: a light head 12. (of bread or cake) spongy or well risen 13. a. (of transport) designed to carry light loads b. (of a vessel, aircraft, or other transport) not loaded 14. carrying light arms or equipment: light infantry 15. (of an industry) producing small consumer goods using light machinery 16. make light of to treat as insignificant or unimportant Adverb with little equipment or luggage: travelling light Verb [lighting, lighted] or lit 1. (esp. of birds) to settle or land after flight 2. (foll. by on, upon)to discover by chance See also lights [Old English lēoht] lightish adj
lightly adv
lightness n
light (lt)1. Electromagnetic radiation that can be perceived by the human eye. It is made up of electromagnetic waves with wavelengths between 4 × 10 -7 and 7 × 10 -7 meters. Light, and all other electromagnetic radiation, travels at a speed of about 299,728 km (185,831 mi) per second in a vacuum. See also photon. 2. Electromagnetic energy of a wavelength just outside the range the human eye can detect, such as infrared light and ultraviolet light. See Note at electromagnetic radiation. |
Lightthe study of the chemical effects of light in the violet and ultraviolet wavelengths. — actinologic, actinological, adj. the measurement of the heating power of light in the violet and ultraviolet range. — actinometrist, n. — actinometric, actinometrical, adj. the ratio between the light reflected from a surf ace and the total light falling upon that surf ace, as the albedo of the moon. double refraction; the separation of light into two unequally refracted, polarized rays, as by some crystals. — birefringent, adj. the study of the reflection and refraction of light. — catadioptric, catadioptrical, adj. the study of light reflection. — catoptric, catoptrical, adj. — catoptrically, adv. the condition or quality of changing in color or luster depending on the angle of light, especially of a gemstone that reflects a single shaft of light when cut in cabochon form. — chatoyant, adj. a property, peculiar to certain crystals, of reflecting light in two different colors when viewed from two different directions. — dichroic, adj. the study of light refraction. — dioptric, adj. the state or condition of being colored like a rainbow or like the light shining through a prism. — iridescent, adj. a polished black glass, the surface of which becomes iridescent when it is breathed upon through a tube. rotation toward the left; counterclockwise rotation, a characteristic of the plane of polarization of light. — levorotatory, adj. the process of impressing porcelain objects, as lamp bases, with figures that become translucent when light is placed within or behind them. — lithophanic, adj. any thing or creature that shines or glows in the dark, especially a phosphorescent or bioluminescent marine or other organism. — noctilucine, adj. the study of the properties of light. Also called photology. — optic, optical, adj. the study of signal lights, especially lighthouses. an abnormal fear of daylight. pain in the eyes caused by light. an abnormal fear of photalgia. the study of light. 1. an apparatus that regulates light flashes so that a rotating object appears to be stationary or moving in a direction opposite to its actual motion.
2. an apparatus for producing unusual optical effects by flashing light upon disks bearing various figures, patterns, etc. the science or study of light in relation to the movement of plants. — photodynamic, photodynamical, adj. the process or art of creating and recording images of people, objects, and phenomena, essentially by means of reflected light or emanating radiation. — photographer, n. — photographic, photographical, adj. movement of bodies, organisms, etc., in response to the stimulus of light. — photokinetic, adj. optics. the breakdown of matter or materials under the influence of light. — photolytic, adj. an abnormal love of light. the measurement of the intensity of light. — photometrician, photometrist, n. — photometric, adj. a pathologic effect produced by light. — photopathic, adj. the tendency to thrive in strong light, as plants. — photophilic, adj. 1. an abnormal fear of light.
2. Also called photodysphoria. a painful sensitivity to light, especially visually.
3. a tendency to thrive in reduced light, as certain plants. the synthesis of complex organic substances from carbon dioxide, water, and inorganic salts, with sunlight as the energy source and a catalyst such as chlorophyll. — photosynthetic, adj. the movement of an organism away from or toward a source of light. — phototactic, adj. the treatment of disease, especially diseases of the skin, with light rays. — phototherapeutic, adj. motion in a particular direction under the stimulus of light, as manifested by certain plants, organisms, etc. — phototropic, adj. the measurement of the polarization of light, as with a polarimeter. an abnormal fear or dislike of flashes of light. a photograph of a spectrum. Also called spectrograph. 1. an optical device for breaking light down into a spectrum and recording the results photographically.
2. spectrogram. — spectrographic, adj. the technique of using a spectrograph and producing spectrograms. a form of Iuminescence created by friction. — triboluminescent, adj.
ThesaurusLegend: Synonyms Related Words Antonyms | Noun | 1. |  light - (physics) electromagnetic radiation that can produce a visual sensation; "the light was filtered through a soft glass window"corona - one or more circles of light seen around a luminous object counterglow, gegenschein - a faint spot of light in the night sky that appears directly opposite the position of the sun; a reflection of sunlight by micrometeoric material in space firelight - the light of a fire (especially in a fireplace) fluorescence - light emitted during absorption of radiation of some other (invisible) wavelength gaslight - light yielded by the combustion of illuminating gas glowing, radiance, glow - the amount of electromagnetic radiation leaving or arriving at a point on a surface glow - a steady even light without flames half-light - a greyish light (as at dawn or dusk or in dim interiors) incandescence, glow - the phenomenon of light emission by a body as its temperature is raised luminescence - light not due to incandescence; occurs at low temperatures shooting star, meteor - a streak of light in the sky at night that results when a meteoroid hits the earth's atmosphere and air friction causes the meteoroid to melt or vaporize or explode moonlight, moonshine, Moon - the light of the Moon; "moonlight is the smuggler's enemy"; "the Moon was bright enough to read by" sunlight, sunshine, sun - the rays of the sun; "the shingles were weathered by the sun and wind" scintillation - (physics) a flash of light that is produced in a phosphor when it absorbs a photon or ionizing particle streamer - light that streams; "streamers of flames" twilight - the diffused light from the sky when the sun is below the horizon but its rays are refracted by the atmosphere of the earth | | 2. |  light - any device serving as a source of illumination; "he stopped the car and turned off the lights"blinker, flasher - a light that flashes on and off; used as a signal or to send messages fairy light - a small colored light used for decoration (especially at Christmas) headlamp, headlight - a powerful light with reflector; attached to the front of an automobile or locomotive houselights - lights that illuminate the audience's part of a theater or other auditorium jacklight - a light used as a lure in hunting or fishing at night navigation light - light on an airplane that indicates the plane's position and orientation; red light on the left (port) wing tip and green light on the right (starboard) wing tip night-light - light (as a candle or small bulb) that burns in a bedroom at night (as for children or invalids) panel light - a light to illuminate an instrument panel room light - light that provides general illumination for a room sconce - a candle or flaming torch secured in a sconce searchlight - a light source with reflectors that projects a beam of light in a particular direction running light, sidelight - light carried by a boat that indicates the boat's direction; vessels at night carry a red light on the port bow and a green light on the starboard bow strip lighting - light consisting of long tubes (instead of bulbs) that provide the illumination torch - a light usually carried in the hand; consists of some flammable substance | | 3. | light - a particular perspective or aspect of a situation; "although he saw it in a different light, he still did not understand"perspective, view, position - a way of regarding situations or topics etc.; "consider what follows from the positivist view" | | 4. |  light - the quality of being luminous; emitting or reflecting light; "its luminosity is measured relative to that of our sun"physical property - any property used to characterize matter and energy and their interactions | | 5. | light - an illuminated area; "he stepped into the light"scene - the place where some action occurs; "the police returned to the scene of the crime" | | 6. |  light - a condition of spiritual awareness; divine illumination; "follow God's light"condition, status - a state at a particular time; "a condition (or state) of disrepair"; "the current status of the arms negotiations" | | 7. | light - the visual effect of illumination on objects or scenes as created in pictures; "he could paint the lightest light and the darkest dark"brightness - the location of a visual perception along a continuum from black to white | | 8. | light - a person regarded very fondly; "the light of my life"friend - a person you know well and regard with affection and trust; "he was my best friend at the university" | | 9. |  light - having abundant light or illumination; "they played as long as it was light"; "as long as the lighting was good" | | 10. | light - mental understanding as an enlightening experience; "he finally saw the light"; "can you shed light on this problem?" | | 11. |  light - merriment expressed by a brightness or gleam or animation of countenance; "he had a sparkle in his eye"; "there's a perpetual twinkle in his eyes" | | 12. | light - public awareness; "it brought the scandal to light" | | 13. |  Light - a divine presence believed by Quakers to enlighten and guide the soul | | 14. | light - a visual warning signal; "they saw the light of the beacon"; "there was a light at every corner" | | 15. | light - a device for lighting or igniting fuel or charges or fires; "do you have a light?"device - an instrumentality invented for a particular purpose; "the device is small enough to wear on your wrist"; "a device intended to conserve water" friction match, match, lucifer - lighter consisting of a thin piece of wood or cardboard tipped with combustible chemical; ignites with friction; "he always carries matches to light his pipe"; "as long you've a lucifer to light your fag" match - a burning piece of wood or cardboard; "if you drop a match in there the whole place will explode" | | Verb | 1. | light - make lighter or brighter; "This lamp lightens the room a bit"spotlight - illuminate with a spotlight, as in the theater | | 2. | light - begin to smoke; "After the meal, some of the diners lit up"ignite, light - cause to start burning; subject to fire or great heat; "Great heat can ignite almost any dry matter"; "Light a cigarette" | | 3. | light - to come to rest, settle; "Misfortune lighted upon him"land, set down - reach or come to rest; "The bird landed on the highest branch"; "The plane landed in Istanbul" | | 4. | light - cause to start burning; subject to fire or great heat; "Great heat can ignite almost any dry matter"; "Light a cigarette"reignite - ignite anew, as of something burning; "The strong winds reignited the cooling embers" combust, burn - cause to burn or combust; "The sun burned off the fog"; "We combust coal and other fossil fuels" light up - ignite; "The sky lit up quickly above the raging volcano" flare up - ignite quickly and suddenly, especially after having died down; "the fire flared up and died down once again" | | 5. | light - fall to somebody by assignment or lot; "The task fell to me"; "It fell to me to notify the parents of the victims"devolve, return, fall, pass - be inherited by; "The estate fell to my sister"; "The land returned to the family"; "The estate devolved to an heir that everybody had assumed to be dead" accrue, fall - come into the possession of; "The house accrued to the oldest son" fall - to be given by assignment or distribution; "The most difficult task fell on the youngest member of the team"; "The onus fell on us"; "The pressure to succeed fell on the youngest student" | | 6. |  light - alight from (a horse)come down, descend, go down, fall - move downward and lower, but not necessarily all the way; "The temperature is going down"; "The barometer is falling"; "The curtain fell on the diva"; "Her hand went up and then fell again" | | Adj. | 1. | light - of comparatively little physical weight or density; "a light load"; "magnesium is a light metal--having a specific gravity of 1.74 at 20 degrees C"heavy - of comparatively great physical weight or density; "a heavy load"; "lead is a heavy metal"; "heavy mahogany furniture" | | 2. | light - (used of color) having a relatively small amount of coloring agent; "light blue"; "light colors such as pastels"; "a light-colored powder"white - being of the achromatic color of maximum lightness; having little or no hue owing to reflection of almost all incident light; "as white as fresh snow"; "a bride's white dress" dark - (used of color) having a dark hue; "dark green"; "dark glasses"; "dark colors like wine red or navy blue" | | 3. | light - of the military or industry; using (or being) relatively small or light arms or equipment; "light infantry"; "light cavalry"; "light industry"; "light weapons"heavy - of the military or industry; using (or being) the heaviest and most powerful armaments or weapons or equipment; "heavy artillery"; "heavy infantry"; "a heavy cruiser"; "heavy guns"; "heavy industry involves large-scale production of basic products (such as steel) used by other industries" | | 4. | light - not great in degree or quantity or number; "a light sentence"; "a light accent"; "casualties were light"; "light snow was falling"; "light misty rain"; "light smoke from the chimney"heavy - unusually great in degree or quantity or number; "heavy taxes"; "a heavy fine"; "heavy casualties"; "heavy losses"; "heavy rain"; "heavy traffic" | | 5. | light - psychologically light; especially free from sadness or troubles; "a light heart"heavy - marked by great psychological weight; weighted down especially with sadness or troubles or weariness; "a heavy heart"; "a heavy schedule"; "heavy news"; "a heavy silence"; "heavy eyelids" | | 6. | light - characterized by or emitting light; "a room that is light when the shutters are open"; "the inside of the house was airy and light"dark - devoid of or deficient in light or brightness; shadowed or black; "sitting in a dark corner"; "a dark day"; "dark shadows"; "dark as the inside of a black cat" | | 7. | light - (used of vowels or syllables) pronounced with little or no stress; "a syllable that ends in a short vowel is a light syllable"; "a weak stress on the second syllable"unstressed - not bearing a stress or accent; "short vowels are unstressed" | | 8. | light - easily assimilated in the alimentary canal; not rich or heavily seasoned; "a light diet"digestible - capable of being converted into assimilable condition in the alimentary canal | | 9. | light - (used of soil) loose and large-grained in consistency; "light soil"loose - not compact or dense in structure or arrangement; "loose gravel" | | 10. |  light - (of sound or color) free from anything that dulls or dims; "efforts to obtain a clean bass in orchestral recordings"; "clear laughter like a waterfall"; "clear reds and blues"; "a light lilting voice like a silver bell"pure - free of extraneous elements of any kind; "pure air and water"; "pure gold"; "pure primary colors"; "the violin's pure and lovely song"; "pure tones"; "pure oxygen" | | 11. |  light - moving easily and quickly; nimble; "the dancer was light and graceful"; "a lightsome buoyant step"; "walked with a light tripping step"light-footed - (of movement) having a light and springy step; "a light-footed girl" | | 12. | light - demanding little effort; not burdensome; "light housework"; "light exercise"undemanding - requiring little if any patience or effort or skill; "the pay was adequate and the job undemanding"; "simple undemanding affection"; "an undemanding boss" | | 13. | light - of little intensity or power or force; "the light touch of her fingers"; "a light breeze"heavy - of great intensity or power or force; "a heavy blow"; "the fighting was heavy"; "heavy seas" | | 14. | light - (physics, chemistry) not having atomic weight greater than average; "light water is ordinary water"chemical science, chemistry - the science of matter; the branch of the natural sciences dealing with the composition of substances and their properties and reactions heavy - (physics, chemistry) being or containing an isotope with greater than average atomic mass or weight; "heavy hydrogen"; "heavy water" | | 15. | light - weak and likely to lose consciousness; "suddenly felt faint from the pain"; "was sick and faint from hunger"; "felt light in the head"; "a swooning fit"; "light-headed with wine"; "light-headed from lack of sleep"ill, sick - affected by an impairment of normal physical or mental function; "ill from the monotony of his suffering" | | 16. | light - very thin and insubstantial; "thin paper"; "light summer dresses"thin - of relatively small extent from one surface to the opposite or in cross section; "thin wire"; "a thin chiffon blouse"; "a thin book"; "a thin layer of paint" | | 17. | light - marked by temperance in indulgence; "abstemious with the use of adverbs"; "a light eater"; "a light smoker"; "ate a light supper"temperate - not extreme in behavior; "temperate in his habits"; "a temperate response to an insult"; "temperate in his eating and drinking" | | 18. | light - less than the correct or legal or full amount often deliberately so; "a light pound"; "a scant cup of sugar"; "regularly gives short weight" | | 19. | light - having little importance; "losing his job was no light matter" | | 20. | light - intended primarily as entertainment; not serious or profound; "light verse"; "a light comedy"frivolous - not serious in content or attitude or behavior; "a frivolous novel"; "a frivolous remark"; "a frivolous young woman" | | 21. | light - silly or trivial; "idle pleasure"; "light banter"; "light idle chatter"frivolous - not serious in content or attitude or behavior; "a frivolous novel"; "a frivolous remark"; "a frivolous young woman" | | 22. | light - designed for ease of movement or to carry little weight; "light aircraft"; "a light truck"light-duty - not designed for heavy work; "a light-duty detergent" | | 23. | light - having relatively few calories; "diet cola"; "light (or lite) beer"; "lite (or light) mayonnaise"; "a low-cal diet" | | 24. |  light - (of sleep) easily disturbed; "in a light doze"; "a light sleeper"; "a restless wakeful night"shallow - not deep or strong; not affecting one deeply; "shallow breathing"; "a night of shallow fretful sleep"; "in a shallow trance" | | 25. |  light - casual and unrestrained in sexual behavior; "her easy virtue"; "he was told to avoid loose (or light) women"; "wanton behavior"unchaste - not chaste; "unchaste conduct" | | Adv. | 1. | light - with few burdens; "experienced travellers travel light" |
light 1 noun 1. brightness, illumination, luminosity, luminescence, ray of light, flash of light, shining, glow, blaze, sparkle, glare, gleam, brilliance, glint, lustre, radiance, incandescence, phosphorescence, scintillation, effulgence, lambency, refulgence << OPPOSITE dark noun 4. aspect, approach, attitude, context, angle, point of view, interpretation, viewpoint, slant, standpoint, vantage point noun 5. understanding, knowledge, awareness, insight, information, explanation, illustration, enlightenment, comprehension, illumination, elucidation << OPPOSITE mystery noun 6. daybreak, morning, dawn, sun, sunrise, sunshine, sunlight, daylight, daytime, sunbeam, morn ( poetic) cockcrow, broad day adjective 7. bright, brilliant, shining, glowing, sunny, illuminated, luminous, well-lighted, well-lit, lustrous, aglow, well-illuminated << OPPOSITE dark adjective 8. pale, fair, faded, blonde, blond, bleached, pastel, light-coloured, whitish, light-toned, light-hued << OPPOSITE dark verb 9. illuminate, light up, brighten, lighten, put on, turn on, clarify, switch on, floodlight, irradiate, illumine, flood with light << OPPOSITE darken verb 10. ignite, inflame, fire, torch, kindle, touch off, set alight, set a match to << OPPOSITE put out bring something to light reveal, expose, unveil, show, discover, disclose, show up, uncover, unearth, lay bare come to light be revealed, appear, come out, turn up, be discovered, become known, become apparent, be disclosed, transpire in the light of something considering, because of, taking into account, bearing in mind, in view of, taking into consideration, with knowledge of light up
light 2 adjective 1. insubstantial, thin, delicate, lightweight, easy, slight, portable, buoyant, airy, flimsy, underweight, not heavy, transportable, lightsome, imponderous << OPPOSITE heavy adjective 6. insignificant, small, minute, tiny, slight, petty, trivial, trifling, inconsequential, inconsiderable, unsubstantial << OPPOSITE serious adjective 7. light-hearted, pleasing, funny, entertaining, amusing, diverting, witty, trivial, superficial, humorous, gay, trifling, frivolous, unserious << OPPOSITE serious adjective 8. carefree, happy, bright, lively, sunny, cheerful, animated, merry, gay, airy, frivolous, cheery, untroubled, blithe, light-hearted adjective 9. nimble, graceful, airy, deft, agile, sprightly, lithe, limber, lissom, light-footed, sylphlike << OPPOSITE clumsy light on or upon something  Translations light [laɪt] n → luz f (= flame); lumbre f (= lamp); luz f; lámpara (= daylight); luz f del día (= headlight); faro (= rear light); luz f trasera; ( for cigarette etc): have you got a light? → ¿tienes fuego?in the light of → a la luz de;
 light [laɪt] n → lumière f (= daylight); lumière, jour m (= lamp); lampe f; ( Aut) (= rear light); feu m: (= headlamp); phare m; (for cigarette etc); have you got a light? → avez-vous du feu? vt [ lighted , pt , pp , lit , pt , pp ] [lɪt] [+ candle, cigarette, fire] → allumer [+ room]; éclaireradv [ travel] → avec peu de bagages; lights npl (= traffic lights) → feux mpl; to cast or shed or throw light on → éclaircir;
 light [laɪt] [ lit , pt, pp ] n → Licht ntadj → leicht (= pale, bright); hell; [ traffic etc] → gering; [ music] → Unterhaltungs- lights npl ( Aut) (also: traffic lights) → Ampel f; to cast or shed or throw light on ( fig) → Licht bringen in +acc;
 light [laɪt] n → luce f; lume m (daylight) → luce, giorno (= lamp); lampada; ( for cigarette etc): have you got a light? → ha da accendere?vt [ pt lighted, pp , lit , pt , pp ] [lɪt] [+ candle, cigarette, fire] → accendere [+ room]; illuminare adj [ room, colour] → chiaro/a (= not heavy), ( also fig) → leggero/a lights npl ( AUT) (= traffic lights); semaforo; light up vi → illuminarsi
|
|
Printer friendly
Cite / link
Email
Feedback
Add definition
lightest