focus


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fo·cus

 (fō′kəs)
n. pl. fo·cus·es or fo·ci (-sī′, -kī′)
1.
a. The distinctness or clarity of an image rendered by an optical system.
b. The state of maximum distinctness or clarity of such an image: in focus; out of focus.
c. An apparatus used to adjust the focal length of an optical system in order to make an image distinct or clear: a camera with automatic focus.
2.
a. A point at which rays of light or other radiation converge or from which they appear to diverge, as after refraction or reflection in an optical system: the focus of a lens. Also called focal point.
3.
a. A center of interest or activity: "Precisely how diet affects E. coli in livestock is the focus of current research" (Cindy Engel).
b. Close or narrow attention; concentration: "He was forever taken aback by [New York's] pervasive atmosphere of purposefulness—the tight focus of its drivers, the brisk intensity of its pedestrians" (Anne Tyler).
c. A condition in which something can be clearly apprehended or perceived: couldn't get the problem into focus.
4. Medicine The region of a localized bodily infection or disease.
5. Geology The point of origin of an earthquake.
6. Mathematics A fixed point whose relationship with a directrix determines a conic section.
v. fo·cused, fo·cus·ing, fo·cus·es or fo·cussed or fo·cus·sing or fo·cus·ses
v.tr.
1. To cause (light rays, for example) to converge on or toward a central point; concentrate.
2.
a. To render (an object or image) in clear outline or sharp detail by adjustment of one's vision or an optical device; bring into focus.
b. To adjust (a lens, for example) to produce a clear image.
3. To direct toward a particular point or purpose: focused all their attention on finding a solution to the problem.
v.intr.
1. To converge on or toward a central point of focus; be focused.
2. To adjust one's vision or an optical device so as to render a clear, distinct image.
3. To concentrate attention or energy: a campaign that focused on economic issues.

[New Latin, from Latin, hearth (probably in reference to the fact that a lens or parabolic mirror can concentrate sunlight on a single point to start a fire).]

fo′cus·er n.

focus

(ˈfəʊkəs)
n, pl -cuses or -ci (-saɪ; -kaɪ; -kiː)
1. (General Physics) a point of convergence of light or other electromagnetic radiation, particles, sound waves, etc, or a point from which they appear to diverge
2. (General Physics) another name for focal point1, focal length
3. (General Physics) optics the state of an optical image when it is distinct and clearly defined or the state of an instrument producing this image: the picture is in focus; the telescope is out of focus.
4. a point upon which attention, activity, etc, is directed or concentrated
5. (Mathematics) geometry a fixed reference point on the concave side of a conic section, used when defining its eccentricity
6. (Geological Science) the point beneath the earth's surface at which an earthquake or underground nuclear explosion originates. Compare epicentre
7. (Pathology) pathol the main site of an infection or a localized region of diseased tissue
vb, -cuses, -cusing, -cused, -cusses, -cussing or -cussed
8. (General Physics) to bring or come to a focus or into focus
9. (often foll by: on) to fix attention (on); concentrate
[C17: via New Latin from Latin: hearth, fireplace]
ˈfocusable adj
ˈfocuser n

fo•cus

(ˈfoʊ kəs)

n., pl. -cus•es, -ci (-sī, -kī), n.
1. a central point, as of attention or activity.
2. a point at which rays of light, heat, or other radiation meet after being refracted or reflected.
3.
a. the focal point of a lens.
b. the focal length of a lens.
c. the clear and sharply defined condition of an image.
d. the position of a viewed object or the adjustment of an optical device necessary to produce a clear image: out of focus.
4. (of a conic section) a point having the property that the distances from any point on a curve to it and to a fixed line have a constant ratio for all points on the curve.
5. the point of origin of an earthquake.
6. the primary center from which a disease develops or in which it localizes.
v.t.
7. to bring to a focus or into focus: to focus the lens of a camera.
8. to concentrate: to focus one's thoughts.
v.i.
9. to become focused.
[1635–45; < Latin: fireplace, hearth]
fo′cus•a•ble, adj.

fo·cus

(fō′kəs)
Plural focuses or foci (fō′sī′, fō′kī′)
1. A point at which rays of light come together or from which they appear to spread apart, as after passing through a lens.
2. The degree of clarity with which an eye or optical instrument produces an image: a telescope with excellent focus.
3. A central point or region, such as the point at which an earthquake starts.
4. Mathematics A fixed point or one of a pair of fixed points used in constructing a curve such as an ellipse, a parabola, or a hyperbola.

Focus

 

draw a bead on To aim at carefully, to line up in the sight of one’s gun; to zero in on a person or thing. The reference is to the bead or front sight of a rifle. George Catlin used the expression literally in his treatise on North American Indians (1833).

zero in on To focus one’s attention on a specific person, proposal, issue, or other matter; to aim at; to set one’s sights on. Originally, zero in referred to adjusting the sights of a gun to the zero or horizontal line so that when aimed and fired at a target, the projectile will hit it dead center. Though this meaning persists, the expression has been extended to include figurative application in various nonballistic contexts as evidenced in this example by J. N. Leonard cited in Webster’s Third:

… bird-dogs zeroing in on coveys of hidden quail.

focus


Past participle: focused/focussed
Gerund: focusing/focussing

Imperative
focus
focus
Present
I focus
you focus
he/she/it focuses
we focus
you focus
they focus
Preterite
I focused/focussed
you focused/focussed
he/she/it focused/focussed
we focused/focussed
you focused/focussed
they focused/focussed
Present Continuous
I am focusing/focussing
you are focusing/focussing
he/she/it is focusing/focussing
we are focusing/focussing
you are focusing/focussing
they are focusing/focussing
Present Perfect
I have focused/focussed
you have focused/focussed
he/she/it has focused/focussed
we have focused/focussed
you have focused/focussed
they have focused/focussed
Past Continuous
I was focusing/focussing
you were focusing/focussing
he/she/it was focusing/focussing
we were focusing/focussing
you were focusing/focussing
they were focusing/focussing
Past Perfect
I had focused/focussed
you had focused/focussed
he/she/it had focused/focussed
we had focused/focussed
you had focused/focussed
they had focused/focussed
Future
I will focus
you will focus
he/she/it will focus
we will focus
you will focus
they will focus
Future Perfect
I will have focused/focussed
you will have focused/focussed
he/she/it will have focused/focussed
we will have focused/focussed
you will have focused/focussed
they will have focused/focussed
Future Continuous
I will be focusing/focussing
you will be focusing/focussing
he/she/it will be focusing/focussing
we will be focusing/focussing
you will be focusing/focussing
they will be focusing/focussing
Present Perfect Continuous
I have been focusing/focussing
you have been focusing/focussing
he/she/it has been focusing/focussing
we have been focusing/focussing
you have been focusing/focussing
they have been focusing/focussing
Future Perfect Continuous
I will have been focusing/focussing
you will have been focusing/focussing
he/she/it will have been focusing/focussing
we will have been focusing/focussing
you will have been focusing/focussing
they will have been focusing/focussing
Past Perfect Continuous
I had been focusing/focussing
you had been focusing/focussing
he/she/it had been focusing/focussing
we had been focusing/focussing
you had been focusing/focussing
they had been focusing/focussing
Conditional
I would focus
you would focus
he/she/it would focus
we would focus
you would focus
they would focus
Past Conditional
I would have focused/focussed
you would have focused/focussed
he/she/it would have focused/focussed
we would have focused/focussed
you would have focused/focussed
they would have focused/focussed
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.focus - the concentration of attention or energy on something; "the focus of activity shifted to molecular biology"; "he had no direction in his life"
engrossment, immersion, absorption, concentration - complete attention; intense mental effort
particularism - a focus on something particular
2.focus - maximum clarity or distinctness of an image rendered by an optical system; "in focus"; "out of focus"
distinctness, sharpness - the quality of being sharp and clear
3.focus - maximum clarity or distinctness of an idea; "the controversy brought clearly into focus an important difference of opinion"
clarity, clearness, limpidity, lucidity, lucidness, pellucidity - free from obscurity and easy to understand; the comprehensibility of clear expression
4.focus - a central point or locus of an infection in an organismfocus - a central point or locus of an infection in an organism; "the focus of infection"
point - the precise location of something; a spatially limited location; "she walked to a point where she could survey the whole street"
focal infection - bacterial infection limited to a specific organ or region especially one causing symptoms elsewhere
5.focus - special emphasis attached to something; "the stress was more on accuracy than on speed"
emphasis, accent - special importance or significance; "the red light gave the central figure increased emphasis"; "the room was decorated in shades of grey with distinctive red accents"
6.focus - a point of convergence of light (or other radiation) or a point from which it diverges
point - the precise location of something; a spatially limited location; "she walked to a point where she could survey the whole street"
7.focus - a fixed reference point on the concave side of a conic section
point - the precise location of something; a spatially limited location; "she walked to a point where she could survey the whole street"
Verb1.focus - direct one's attention on something; "Please focus on your studies and not on your hobbies"
engross, engulf, steep, soak up, immerse, absorb, plunge - devote (oneself) fully to; "He immersed himself into his studies"
cerebrate, cogitate, think - use or exercise the mind or one's power of reason in order to make inferences, decisions, or arrive at a solution or judgments; "I've been thinking all day and getting nowhere"
rivet - hold (someone's attention); "The discovery of the skull riveted the paleontologists"
recall - cause one's (or someone else's) thoughts or attention to return from a reverie or digression; "She was recalled by a loud laugh"
think - focus one's attention on a certain state; "Think big"; "think thin"
zoom in - examine closely; focus one's attention on; "He zoomed in on the book"
take heed, listen, hear - listen and pay attention; "Listen to your father"; "We must hear the expert before we make a decision"
2.focus - cause to converge on or toward a central point; "Focus the light on this image"
refocus - focus once again; The physicist refocused the light beam"
sharpen - make (images or sounds) sharp or sharper
blur - to make less distinct or clear; "The haze blurs the hills"
3.focus - bring into focus or alignment; to converge or cause to converge; of ideas or emotions
align, aline, adjust, line up - place in a line or arrange so as to be parallel or straight; "align the car with the curb"; "align the sheets of paper on the table"
refocus - focus anew; "The group needs to refocus its goals"
4.focus - become focussed or come into focus; "The light focused"
adapt, conform, adjust - adapt or conform oneself to new or different conditions; "We must adjust to the bad economic situation"
slur, dim, blur - become vague or indistinct; "The distinction between the two theories blurred"
5.focus - put (an image) into focus; "Please focus the image; we cannot enjoy the movie"
adjust, correct, set - alter or regulate so as to achieve accuracy or conform to a standard; "Adjust the clock, please"; "correct the alignment of the front wheels"
refocus - put again into focus or focus more sharply; "refocus the image until it is very sharp"
center, center on, concentrate on, focus on, revolve about, revolve around - center upon; "Her entire attention centered on her children"; "Our day revolved around our work"
blear, blur - make dim or indistinct; "The fog blurs my vision"

focus

verb
1. concentrate, centre, spotlight, zero in on (informal), meet, join, direct, aim, pinpoint, converge, rivet, bring to bear, zoom in The summit is expected to focus on arms control.
2. fix, train, direct, aim He focused the binoculars on the boat.
noun
1. centre, focal point, central point, core, bull's eye, centre of attraction, centre of activity, cynosure The children are the focus of her life.
2. focal point, heart, target, headquarters, hub, meeting place the focus of the campaign for black rights
3. attention, concern, priority, concentration IBM has shifted its focus to personal computers.
4. subject, point, question, issue, matter, object, theme, substance, topic, subject matter, field of inquiry or reference Food is the main focus of the book.
in focus clear, sharp, distinct, crisp, sharp-edged, sharply defined Pictures should be in focus.
out of focus blurred, obscure, unclear, fuzzy, hazy, muzzy, ill-defined, indistinct Some of the pictures are out of focus.

focus

noun
1. A place of concentrated activity, influence, or importance:
2. A point of origin from which ideas or influences, for example, originate:
verb
1. To direct toward a common center:
2. To devote (oneself or one's efforts):
Translations
بُؤْرَهمَرْكَزمَرْكِز الإهْتِماميُرَكِّزُيُرَكِّز، يَوَجِّـه
ohniskosoustředitsoustředit sestředstřed zájmu
fokusfokuserehenledemidtpunktbrændpunkt
epitsenterfookuskeskendus
fokuskeskipistekohdistaaleikkauspistepolttopiste
fokususredotočiti se
élesre állítösszpontosít
beina athyglibrennipunktur, fókusmiîdepill, athyglistilla linsu/fókus
焦点焦点を合わせる絞る集める集中する
초점초점을 맞추다
nustatyti ryškumąsutelktižidinio
centrsfokusskoncentrētnostādīt fokusā
ohniskozaostriť
izostritiosredotočiti sežarišče
fokusfokuserabrännpunkt
จุดเน้นมุ่งเน้น
odakodak ayarı yapmakodak noktasıodaklanmakyöneltmek
chú trọngtrọng tâm

focus

[ˈfəʊkəs]
A. N (focuses or foci (pl)) [ˈfəʊsaɪ] (gen) → foco m; [of attention] → centro m, foco m
he was the focus of attentionera el centro or foco de atención
to be in focus (Phot) → estar enfocado
to be out of focus (Phot) → estar desenfocado
B. VT [+ camera, instrument] → enfocar (on a) [+ attention] → centrar, concentrar (on en) to focus one's eyes on sth/sbfijar la mirada en algo/algn
all eyes were focussed on hertodos la miraban fijamente
C. VI to focus (on) [light] → converger (en); [heat rays] → concentrarse (en); [eyes] → fijarse (en)
to focus on sth (Phot) → enfocar algo

focus

[ˈfəʊkəs]
n [focuses] (pl)
(= centre) [interest] → centre m
to be the focus of attention → être le centre d'attention
(= attention) → attention f
focus on sth → intérêt pour qch
(PHOTOGRAPHY) [camera] → foyer m
in focus [camera, telescope] → au point
out of focus [camera, telescope] → pas au point
to be out of focus [image] → être flou
The house is out of focus in this photo → La maison est floue sur cette photo.
to be in focus [image] → être net(te) out-of-focus
vt
[+ binoculars, telescope] → mettre au point
Try to focus the binoculars → Essaye de mettre les jumelles au point.
to focus binoculars on sth → braquer des jumelles sur qch
to focus a camera on sth → braquer un appareil photo sur qch

I can't focus my eyes → Je vois trouble., fixer son regard sur qch
[+ light rays] → faire converger
to focus light on sth → diriger la lumière sur qch
(= concentrate) to focus attention on sb/sth → focaliser l'attention sur qn/qch
to focus one's attention on sb/sth → se focaliser sur qn/qch
focus on
vt fus
(with camera)régler la mise au point sur
The cameraman focused on the bird → Le caméraman a réglé la mise au point sur l'oiseau.
(= look at) → fixer son regard sur; [eyes] → accommoder sur
(= concentrate on) → se concentrer sur
Let's focus on the plot of the play → Concentrons-nous sur l'intrigue de la pièce.

focus

n pl <foci> (Phys, Math, fig) → Brennpunkt m; (of storm)Zentrum nt; (of earthquake, Med) → Herd m; in focus (camera)(scharf) eingestellt; photoscharf; to bring something into focus (lit)etw klar or scharf einstellen; (fig) topicetw in den Brennpunkt rücken; out of focus (lit, camera) → unscharf eingestellt; photounscharf; (fig) ideasvage; to come into focusins Blickfeld rücken; to keep something in focus (lit)etw scharf eingestellt im Suchfeld behalten; (fig)etw im Blickfeld behalten; he/the new proposal was the focus of attentioner/der neue Vorschlag stand im Mittelpunkt
vt instrumenteinstellen (→ on auf +acc); light, heat raysbündeln; (fig) one’s efforts, resources, energykonzentrieren (→ on auf +acc); to focus one’s eyes on somebody/somethingden Blick auf jdn/etw richten; to focus one’s attention/mindsich konzentrieren; I should like to focus your attention (up)on a new problemich möchte Ihre Aufmerksamkeit auf ein neues Problem lenken
vi (light, heat rays)sich bündeln; to focus on somethingsich auf etw (acc)konzentrieren; his eyes focused on the booksein Blick richtete sich auf das Buch; I can’t focus properlyich kann nicht mehr klar sehen

focus

[ˈfəʊkəs]
1. n (focuses or foci (pl)) [ˈfəʊkaɪ] (gen) → fuoco; (of attention, interest) → centro
to be out of focus (Phot) → essere sfocato/a
in focus → a fuoco
2. vt to focus (on) (camera, instrument, field glasses) → mettere a fuoco (su); (attention, eyes) → focalizzare (su); (light rays) → far convergere (su)
3. vi to focus (on) (light, heat, rays) → convergere (su); (person) → fissare lo sguardo (su)
to focus on sth (eyes, person) → mettere a fuoco qc

focus

(ˈfoukəs) plurals ˈfocuses ~foci (ˈfousai) noun
1. the point at which rays of light meet after passing through a lens.
2. a point to which light, a look, attention etc is directed. She was the focus of everyone's attention.
verbpast tense, past participle ˈfocus(s)ed
1. to adjust (a camera, binoculars etc) in order to get a clear picture. Remember to focus the camera / the picture before taking the photograph.
2. to direct (attention etc) to one point. The accident focussed public attention on the danger.
ˈfocal adjective
in/out of focus
giving or not giving a clear picture. These photographs are out of focus.

focus

مَرْكَز, يُرَكِّزُ soustředit se, střed zájmu fokus, fokusere Brennpunkt, konzentrieren (sich) εστία, εστιάζω enfocar, foco keskipiste, kohdistaa centre, se concentrer fokus, usredotočiti se centro, concentrarsi 焦点, 焦点を合わせる 초점, 초점을 맞추다 aandacht hebben voor, focus fokus, fokusere ognisko, skupić focar, foco фокус, фокусировать(ся) fokus, fokusera จุดเน้น, มุ่งเน้น odak, odaklanmak chú trọng, trọng tâm 焦点, 集中

fo·cus

n. L. foco;
vt. enfocar.

focus

n (pl foci o focuses) foco; vt (pret & pp focused o focussed; ger focusing o focussing) enfocar; to — on centrarse en, enfocarse en; We need to focus on your health..Tenemos que centrarnos en su salud.
References in classic literature ?
thought Hepzibah, who had been screwing her visual organs into the acutest focus of which they were capable.
That unblinkingly vivid Japanese sun seems the blazing focus of the glassy ocean's immeasureable burning-glass.
But as soon as my mental sight cleared and I got a right focus on it, I saw I was mistaken; it WAS natural.
Then I did the same for Herbert (who modestly said he had not my administrative genius), and felt that I had brought his affairs into a focus for him.
She was displaced from the focus of attention by the appearance of the two policemen who had been sent to the chalet.
He was a teacher of acoustics and a student of electricity, possibly the only man in his generation who was able to focus a knowledge of both subjects upon the problem of the telephone.
Making straight for the steep cliff, where the churchyard hangs over the laneway to the East Pier so steeply that some of the flat tombstones, thruffsteans or through-stones, as they call them in Whitby vernacular, actually project over where the sustaining cliff has fallen away, it disappeared in the darkness, which seemed intensified just beyond the focus of the searchlight.
We were not a hundred feet from the burning focus, the light of which increased and dazzled our eyes.
La Rochelle, which had derived a new importance from the ruin of the other Calvinist cities, was, then, the focus of dissensions and ambition.
He can scarcely trust his good fortune, in having got thither unperceived--recollecting that, at one time, he was delayed by the throng, in the very focus of a lighted lantern; and, again, there were footsteps that seemed to tread behind his own, distinct from the multitudinous tramp around him; and, anon, he heard a voice shouting afar, and fancied that it called his name.
Like the life in some coast town that was once a watering-place, and is now a port, where the genteel streets are silent and grass-grown, and the docks and warehouses busy and resonant, the life at the Hall has changed its focus, and no longer radiates from the parlour, but from the kitchen and the farmyard.
Adjusting the focus of the telescope, I again looked, and now made it out to be a human skull.