Definition of axis

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Axis (n.) 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..

Lern More About Axis

Vane :: Vane (n.) A contrivance attached to some elevated object for the purpose of showing which way the wind blows; a weathercock. It is usually a plate or strip of metal, or slip of wood, often cut into some fanciful form, and placed upon a perpendicular axis around which it moves freely..
Concavo-convex :: Concavo-convex (a.) Specifically, having such a combination of concave and convex sides as makes the focal axis the shortest line between them. See Illust. under Lens..
Axle :: Axle (n.) An axis; as, the sun's axle..
Axial :: Axial (a.) Belonging to the axis of the body; as, the axial skeleton; or to the axis of any appendage or organ; as, the axial bones..
Day :: Day (n.) The period of the earth's revolution on its axis. -- ordinarily divided into twenty-four hours. It is measured by the interval between two successive transits of a celestial body over the same meridian, and takes a specific name from that of the body. Thus, if this is the sun, the day (the interval between two successive transits of the sun's center over the same meridian) is called a solar day; if it is a star, a sidereal day; if it is the moon, a lunar day. See Civil day, Sidereal day
Axis :: Axis (n.) 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..
Twist :: Twist (v. t.) To distort, as a solid body, by turning one part relatively to another about an axis passing through both; to subject to torsion; as, to twist a shaft..
Corncob :: Corncob (n.) The cob or axis on which the kernels of Indian corn grow.
Chittra :: Chittra (n.) The axis deer of India.
Abduction :: Abduction (n.) The movement which separates a limb or other part from the axis, or middle line, of the body..
Dorsoventral :: Dorsoventral (a.) From the dorsal to the ventral side of an animal; as, the dorsoventral axis..
Induplicate :: Induplicate (a.) Having the edges bent abruptly toward the axis; -- said of the parts of the calyx or corolla in aestivation.
Vortex :: Vortex (n.) A supposed collection of particles of very subtile matter, endowed with a rapid rotary motion around an axis which was also the axis of a sun or a planet. Descartes attempted to account for the formation of the universe, and the movements of the bodies composing it, by a theory of vortices..
Neurokeratin :: Neurokeratin (n.) A substance, resembling keratin, present in nerve tissue, as in the sheath of the axis cylinder of medullated nerve fibers. Like keratin it resists the action of most chemical agents, and by decomposition with sulphuric acid yields leucin and tyrosin..
Extrorse :: Extrorse (a.) Facing outwards, or away from the axis of growth; -- said esp. of anthers occupying the outer side of the filament..
Semicolumn :: Semicolumn (n.) A half column; a column bisected longitudinally, or along its axis..
Sporangia :: Sporangiophore (n.) The axis or receptacle in certain ferns (as Trichomanes), which bears the sporangia..
Torsion :: Torsion (n.) The act of turning or twisting, or the state of being twisted; the twisting or wrenching of a body by the exertion of a lateral force tending to turn one end or part of it about a longitudinal axis, while the other is held fast or turned in the opposite direction..
Eccentric :: Eccentric (n.) A circle described about the center of an elliptical orbit, with half the major axis for radius..
Taxis :: Taxis (n.) Manipulation applied to a hernial tumor, or to an intestinal obstruction, for the purpose of reducing it..
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