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- Axis - n. - The spotted deer (Cervus axis or Axis maculata) of India, where it is called hog deer and parrah (Moorish name).
- Axis - n. - 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.
- 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.
- Axis - n. - The stem; the central part, or longitudinal support, on which organs or parts are arranged; the central line of any body.
- Axis - n. - The second vertebra of the neck, or vertebra dentata.
- 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.
- Axis - n. - One of several imaginary lines, assumed in describing the position of the planes by which a crystal is bounded.
- Axis - n. - The primary or secondary central line of any design.
- Swash - v. t. - An oval figure, whose moldings are oblique to the axis of the work.
- Band - v. t. - A stripe, streak, or other mark transverse to the axis of the body.
- Trochoid - a. - Admitting of rotation on an axis; -- sometimes applied to a pivot joint like that between the atlas and axis in the vertebral column.
- Subcontrary - a. - Having, or being in, a contrary order; -- said of a section of an oblique cone having a circular base made by a plane not parallel to the base, but so inclined to the axis that the section is a circle; applied also to two similar triangles when so placed as to have a common angle at the vertex, the opposite sides not being parallel.
- Extrorse - a. - Facing outwards, or away from the axis of growth; -- said esp. of anthers occupying the outer side of the filament.
- Gimbals - n. - A contrivance for permitting a body to incline freely in all directions, or for suspending anything, as a barometer, ship's compass, chronometer, etc., so that it will remain plumb, or level, when its support is tipped, as by the rolling of a ship. It consists of a ring in which the body can turn on an axis through a diameter of the ring, while the ring itself is so pivoted to its support that it can turn about a diameter at right angles to the first.
- Juba - n. - A loose panicle, the axis of which falls to pieces, as in certain grasses.
- 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.
- Plumous - a. - Having hairs, or other parts, arranged along an axis like a feather; feathery; plumelike; as, a plumose leaf; plumose tentacles.
- Posterior - a. - On the side next the axis of inflorescence; -- said of an axillary flower.
- Clinodiagonal - n. - That diagonal or lateral axis in a monoclinic crystal which makes an oblique angle with the vertical axis. See Crystallization.
- Orientation - n. - The tendency of a revolving body, when suspended in a certain way, to bring the axis of rotation into parallelism with the earth's axis.
- Columella - n. - A columnlike axis in the capsules of mosses.
- 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.
- Brachypinacoid - n. - A plane of an orthorhombic crystal which is parallel both to the vertical axis and to the shorter lateral (brachydiagonal) axis.
- Cephalocercal - a. - Relating to the long axis of the body.
- Columella - n. - The upright pillar in the axis of most univalve shells.
- Lytta - n. - A fibrous and muscular band lying within the longitudinal axis of the tongue in many mammals, as the dog. M () M, the thirteenth letter of the English alphabet, is a vocal consonant, and from the manner of its formation, is called the labio-nasal consonant. See Guide to Pronunciation, // 178-180, 242.
- Dispart - n. - A piece of metal placed on the muzzle, or near the trunnions, on the top of a piece of ordnance, to make the line of sight parallel to the axis of the bore; -- called also dispart sight, and muzzle sight.
- Ladies' tresses - - A name given to several species of the orchidaceous genus Spiranthes, in which the white flowers are set in spirals about a slender axis and remotely resemble braided hair.
- Run - a. - To turn, as a wheel; to revolve on an axis or pivot; as, a wheel runs swiftly round.
- Elevation - n. - The movement of the axis of a piece in a vertical plane; also, the angle of elevation, that is, the angle between the axis of the piece and the line o/ sight; -- distinguished from direction.
- Tubicorn - n. - Any ruminant having horns composed of a bony axis covered with a horny sheath; a hollow-horned ruminant.
- Macrodome - n. - A dome parallel to the longer lateral axis of an orthorhombic crystal. See Dome, n., 4.
- Kite - n. - A quadrilateral, one of whose diagonals is an axis of symmetry.