axis(redirected from orbital axis)
Also found in: Thesaurus, Medical, Financial, Encyclopedia.
Related to orbital axis: optic axis
n. pl. ax·es (ăk′sēz′)
1. A straight line about which a body or geometric object rotates or may be conceived to rotate.
a. An unlimited line, half-line, or line segment serving to orient a space or a geometric object, especially a line about which the object is symmetric.
b. A reference line from which distances or angles are measured in a coordinate system.
3. A center line to which parts of a structure or body may be referred.
4. An imaginary line to which elements of a work of art, such as a picture, are referred for measurement or symmetry.
a. The second cervical vertebra on which the head turns.
b. Any of various central structures, such as the spinal column, or standard abstract lines used as a positional referent.
6. Botany The main stem or central part about which organs or plant parts such as branches are arranged.
7. One of three mutually perpendicular lines that define the orientation of an aircraft, with one being along its direction of travel and the other two being perpendicular to the direction of travel.
8. A line through the optical center of a lens that is perpendicular to both its surfaces.
9. One of three or four imaginary lines used to define the faces of a crystal and the position of its atoms.
a. An alliance of powers, such as nations, to promote mutual interests and policies.
b. Axis The alliance of Germany and Italy in 1936, later including Japan and other nations, that opposed the Allies in World War II.
[Middle English, from Latin.]
n, pl axes (ˈæksiːz)
1. (Mathematics) a real or imaginary line about which a body, such as an aircraft, can rotate or about which an object, form, composition, or geometrical construction is symmetrical
2. (Mathematics) one of two or three reference lines used in coordinate geometry to locate a point in a plane or in space
3. (Anatomy) anatomy the second cervical vertebra. Compare atlas3
4. (Botany) botany the main central part of a plant, typically consisting of the stem and root, from which secondary branches and other parts develop
5. (Government, Politics & Diplomacy) an alliance between a number of states to coordinate their foreign policy
6. (General Physics) optics Also called: principal axis the line of symmetry of an optical system, such as the line passing through the centre of a lens
7. (Geological Science) geology an imaginary line along the crest of an anticline or the trough of a syncline
8. (General Physics) crystallog one of three lines passing through the centre of a crystal and used to characterize its symmetry
[C14: from Latin: axletree, earth's axis; related to Greek axōn axis]
n, pl axises
(Animals) any of several S Asian deer of the genus Axis, esp A. axis. They typically have a reddish-brown white-spotted coat and slender antlers
[C18: from Latin: Indian wild animal, of uncertain identity]
a. the Axis the alliance of Nazi Germany, Fascist Italy, and Japan, established in 1936 and lasting until their defeat in World War II
b. (as modifier): the Axis powers.
n., pl. ax•es (ˈæk siz)
1. the line about which a rotating body, such as the earth, turns.
a. a central line that bisects a two-dimensional body or figure.
b. a line about which a three-dimensional body or figure is symmetrical.
c. any line used as a fixed reference for determining the position of a point or series of points, as the x- or y-axis in a system of Cartesian coordinates.
a. a central or principal structure about which something turns or is arranged: the skeletal axis.
b. the second cervical vertebra.
a. the main support of a plant; the stem and root.
b. the main support of an inflorescence.
5. an imaginary line, in a given formal structure, about which a form, area, or plane is organized.
6. the Axis, (in World War II) the nations that fought against the Allies: Germany, Italy, Japan, and others.
7. an alliance of two or more nations to coordinate their foreign and military policies.
8. a principal line of development, movement, etc.
[1540–50; < Latin axis an axletree, axle, axis; Greek áxōn, Sktákṣas]
Plural axes (ăk′sēz′)
1. An imaginary line around which an object rotates. In a rotating sphere, such as the Earth and other planets, the two ends of the axis are called poles.
a. A line, ray, or line segment with respect to which a figure or object is symmetrical.
b. In the Cartesian coordinate system, one of the reference lines from which or along which distances or angles are measured: the x-axis.
3. Anatomy The second cervical vertebra on which the head turns.
4. Botany The main stem or central part of a plant, about which plant parts, such as branches, are arranged.
In land warfare, the general direction of movement, planned or achieved, usually between assigned boundaries.
Axisthe association of the countries that formed the German/Italian/Japanese alliance in World War II.
A national alliance to co-ordinate foreign policy, specifically the pact between Hitler and Mussolini in 1937.
Switch to new thesaurus
|Noun||1.||axis - a straight line through a body or figure that satisfies certain conditions|
coordinate axis - one of the fixed reference lines of a coordinate system
major axis - the longest axis of an ellipse or ellipsoid; passes through the two foci
semimajor axis - one-half the major axis of an ellipse; the distance from the center of an ellipse to one end
minor axis - the shorter or shortest axis of an ellipse or ellipsoid
semiminor axis - one-half the minor axis of an ellipse
principal axis, optic axis - a line that passes through the center of curvature of a lens so that light is neither reflected nor refracted; "in a normal eye the optic axis is the direction in which objects are seen most distinctly"
optic axis - in a doubly refracting crystal, the line in the direction of which no double refraction occurs; "a crystal may have either one or two optic axes"
line - a spatial location defined by a real or imaginary unidimensional extent
|2.||axis - the main stem or central part about which plant organs or plant parts such as branches are arranged|
stele - the usually cylindrical central vascular portion of the axis of a vascular plant
rachis - axis of a compound leaf or compound inflorescence
stalk, stem - a slender or elongated structure that supports a plant or fungus or a plant part or plant organ
spadix - the fleshy axis of a spike often surrounded by a spathe
|3.||Axis - in World War II the alliance of Germany and Italy in 1936 which later included Japan and other nations; "the Axis opposed the Allies in World War II"|
|4.||axis - a group of countries in special alliance|
alignment, alinement, coalition, alliance - an organization of people (or countries) involved in a pact or treaty
|5.||axis - the 2nd cervical vertebra; serves as a pivot for turning the head|
odontoid process - a toothlike process at the back of 2nd vertebra of the neck
|6.||axis - the center around which something rotates|
mechanism - device consisting of a piece of machinery; has moving parts that perform some function
axis[ˈæksɪs] [axes] (pl) n → axe m
Axis[ˈæksɪs] n the Axis → l'Asse
axis[ˈæksɪs] n (axes (pl)) [ˈæksiːz] (Geom) (of the earth) → asse m
axis(ˈӕksis) – plural axes (ˈӕksiːz) – noun
1. the real or imaginary line on which a thing turns (as the axis of the earth, from North Pole to South Pole, around which the earth turns). as مِحْوَرالأرض (الدَّوَران) ос eixo osa die Achse akse ο άξονας της Γης eje telg محور akseli axeציר धुरी os tengely poros möndull, öxull asse 軸 지축 ašis ass paksi asakseoś محور eixo axă ось os os osa axel แกน; เส้นผ่านศูนย์กลาง eksen, mihver 軸線 вісь محور trục 轴线
2. a fixed line used as a reference, as in a graph. He plotted the temperatures on the horizontal axis. as مِحْوَر ос eixo osa die Achse akse άξοναςeje telg خط سنجش؛ مدار مرجع akseli axeציר धुरी os tengely poros ás asse 軸線 축선 ašis ass paksi asakseoś د سنجش خط یا کرښه eixo axă ось os os osa axel แกน eksen 圖軸 вісь محوری سطر trục đồ thị 轴