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

Conoid :: Conoid (n.) A solid formed by the revolution of a conic section about its axis; as, a parabolic conoid, elliptic conoid, etc.; -- more commonly called paraboloid, ellipsoid, etc..
Inflorescence :: Inflorescence (n.) The mode of flowering, or the general arrangement and disposition of the flowers with reference to the axis, and to each other..
Revolve :: Revolve (v. t.) To cause to turn, as on an axis..
Flexion :: Flexion (n.) The bending of a limb or joint; that motion of a joint which gives the distal member a continually decreasing angle with the axis of the proximal part; -- distinguished from extension.
Centripetal :: Centripetal (a.) Having the radicle turned toward the axis of the fruit, as some embryos..
Roll :: Roll (n.) To cause to revolve by turning over and over; to move by turning on an axis; to impel forward by causing to turn over and over on a supporting surface; as, to roll a wheel, a ball, or a barrel..
Bogie :: Bogie (n.) A four-wheeled truck, having a certain amount of play around a vertical axis, used to support in part a locomotive on a railway track..
Nectostem :: Nectostem (n.) That portion of the axis which bears the nectocalyces in the Siphonophora.
Lytta :: Lytta (n.) A fibrous and muscular band lying within the longitudinal axis of the tongue in many mammals, as the dog..
Kite :: Kite (n.) A quadrilateral, one of whose diagonals is an axis of symmetry..
Cephalocercal :: Cephalocercal (a.) Relating to the long axis of the body.
Lithophyte :: Lithophyte (n.) A hard, or stony, plantlike organism, as the gorgonians, corals, and corallines, esp. those gorgonians having a calcareous axis. All the lithophytes except the corallines are animals..
Tangent :: Tangent (v. t.) A tangent line curve, or surface; specifically, that portion of the straight line tangent to a curve that is between the point of tangency and a given line, the given line being, for example, the axis of abscissas, or a radius of a circle produced. See Trigonometrical function, under Function..
Spike :: Spike (n.) A kind of flower cluster in which sessile flowers are arranged on an unbranched elongated axis.
Abduction :: Abduction (n.) The movement which separates a limb or other part from the axis, or middle line, of the body..
Semiaxis :: Semiaxis (n.) One half of the axis of an /llipse or other figure.
Monostichous :: Monostichous (a.) Arranged in a single row on one side of an axis, as the flowers in grasses of the tribe Chloridae..
Ring :: Ring (n.) The solid generated by the revolution of a circle, or other figure, about an exterior straight line (as an axis) lying in the same plane as the circle or other figure..
Trundlehead :: Trundlehead (n.) The drumhead of a capstan; especially, the drumhead of the lower of two capstans on the sane axis..
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..
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