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AXIS
axis, axis of rotation
(noun) the center around which something rotates
axis, axis vertebra
(noun) the 2nd cervical vertebra; serves as a pivot for turning the head
axis
(noun) a straight line through a body or figure that satisfies certain conditions
bloc, axis
(noun) a group of countries in special alliance
Axis
(noun) in World War II the alliance of Germany and Italy in 1936 which later included Japan and other nations; āthe Axis opposed the Allies in World War IIā
axis
(noun) the main stem or central part about which plant organs or plant parts such as branches are arranged
Source: WordNet® 3.1
Proper noun
Axis
The alliance (in effect before and during World War II) of Germany, Italy, Japan, and several minor allied countries, which opposed the Allies.
Synonyms
• the Axis Powers
Etymology 1
Noun
axis (plural axes)
(geometry) An imaginary line around which an object spins (an axis of rotation) or is symmetrically arranged (an axis of symmetry).
(mathematics) A fixed one-dimensional figure, such as a line or arc, with an origin and orientation and such that its points are in one-to-one correspondence with a set of numbers; an axis forms part of the basis of a space or is used to position and locate data in a graph (a coordinate axis)
(anatomy) The second cervical vertebra of the spine
Synonym: epistropheus
(psychiatry) A form of classification and descriptions of mental disorders or disabilities used in manuals such as the DSM (Diagnostic and Statistical Manual of Mental Disorders)
(botany) The main stem or central part about which organs or plant parts such as branches are arranged
Coordinate terms
• (cervical vertebra): atlas
Etymology 2
Noun
axis (plural axises)
Axis axis, a deer native to Asia.
Synonyms: chital, cheetal, chital deer, spotted deer, axis deer
Source: Wiktionary
Ax"is, n. Etym: [L.] (Zoƶl.)
Definition: The spotted deer (Cervus axis or Axis maculata) of India, where it is called hog deer and parrah (Moorish name).
Ax"is, n.; pl. Axes. Etym: [L. axis axis, axle. See Axle.]
Definition: A straight line, real or imaginary, passing through a body, on which it revolves, or may be supposed to revolve; a line passing through a body or system around which the parts are symmetrically arranged.
2. (Math.)
Definition: A straight line with respect to which the different parts of a magnitude are symmetrically arranged; as, the axis of a cylinder, i. e., the axis of a cone, that is, the straight line joining the vertex and the center of the base; the axis of a circle, any straight line passing through the center.
3. (Bot.)
Definition: The stem; the central part, or longitudinal support, on which organs or parts are arranged; the central line of any body. Gray.
4. (Anat.) (a) The second vertebra of the neck, or vertebra dentata. (b) Also used of the body only of the vertebra, which is prolonged anteriorly within the foramen of the first vertebra or atlas, so as to form the odontoid process or peg which serves as a pivot for the atlas and head to turn upon.
5. (Crystallog.)
Definition: One of several imaginary lines, assumed in describing the position of the planes by which a crystal is bounded.
6. (Fine Arts)
Definition: The primary of secondary central line of any design. Anticlinal axis (Geol.), a line or ridge from which the strata slope downward on the two opposite sides.
– Synclinal axis, a line from which the strata slope upward in opposite directions, so as to form a valley.
– Axis cylinder (Anat.), the neuraxis or essential, central substance of a nerve fiber; -- called also axis band, axial fiber, and cylinder axis.
– Axis in peritrochio, the wheel and axle, one of the mechanical powers.
– Axis of a curve (Geom.), a straight line which bisects a system of parallel chords of a curve; called a principal axis, when cutting them at right angles, in which case it divides the curve into two symmetrical portions, as in the parabola, which has one such axis, the ellipse, which has two, or the circle, which has an infinite number. The two axes of the ellipse are the major axis and the minor axis, and the two axes of the hyperbola are the transverse axis and the conjugate axis.
– Axis of a lens, the straight line passing through its center and perpendicular to its surfaces.
– Axis of a telescope or microscope, the straight line with which coincide the axes of the several lenses which compose it.
– Axes of coƶrdinates in a plane, to straight lines intersecting each other, to which points are referred for the purpose of determining their relative position: they are either rectangular or oblique.
– Axes of coƶrdinates in space, the three straight lines in which the coƶrdinate planes intersect each other.
– Axis of a balance, that line about which it turns.
– Axis of oscillation, of a pendulum, a right line passing through the center about which it vibrates, and perpendicular to the plane of vibration.
– Axis of polarization, the central line around which the prismatic rings or curves are arranged. Brewster.
– Axis of revolution (Descriptive Geom.), a straight line about which some line or plane is revolved, so that the several points of the line or plane shall describe circles with their centers in the fixed line, and their planes perpendicular to it, the line describing a surface of revolution, and the plane a solid of revolution.
– Axis of symmetry (Geom.), any line in a plane figure which divides the figure into two such parts that one part, when folded over along the axis, shall coincide with the other part.
– Axis of the equator, ecliptic, horizon (or other circle considered with reference to the sphere on which it lies), the diameter of the sphere which is perpendicular to the plane of the circle. Hutton.
– Axis of the Ionic capital (Arch.), a line passing perpendicularly through the middle of the eye of the volute.
– Neutral axis (Mech.), the line of demarcation between the horizontal elastic forces of tension and compression, exerted by the fibers in any cross section of a girder.
– Optic axis of a crystal, the direction in which a ray of transmitted light suffers no double refraction. All crystals, not of the isometric system, are either uniaxial or biaxial.
– Optic axis, Visual axis (Opt.), the straight line passing through the center of the pupil, and perpendicular to the surface of the eye.
– Radical axis of two circles (Geom.), the straight line perpendicular to the line joining their centers and such that the tangents from any point of it to the two circles shall be equal to each other.
– Spiral axis (Arch.), the axis of a twisted column drawn spirally in order to trace the circumvolutions without.
– Axis of abscissas and Axis of ordinates. See Abscissa.
Source: Webster’s Unabridged Dictionary 1913 Edition
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Word of the Day
23 April 2024
GRADUAL
(noun) (Roman Catholic Church) an antiphon (usually from the Book of Psalms) immediately after the epistle at Mass
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