Definition of axis

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Axis (n.) The second vertebra of the neck, or vertebra dentata..

Lern More About Axis

Direction :: Direction (n.) The pointing of a piece with reference to an imaginary vertical axis; -- distinguished from elevation. The direction is given when the plane of sight passes through the object.
Columella :: Columella (n.) A columnlike axis in the capsules of mosses.
Y :: Y (n.) One of the forked holders for supporting the telescope of a leveling instrument, or the axis of a theodolite; a wye..
Torsional :: Torsional (a.) Of or pertaining to torsion; resulting from torsion, or the force with which a thread or wire returns to a state of rest after having been twisted round its axis; as, torsional force..
Ellipse :: Ellipse (n.) An oval or oblong figure, bounded by a regular curve, which corresponds to an oblique projection of a circle, or an oblique section of a cone through its opposite sides. The greatest diameter of the ellipse is the major axis, and the least diameter is the minor axis. See Conic section, under Conic, and cf. Focus..
Slue :: Slue (v. t.) To turn about a fixed point, usually the center or axis, as a spar or piece of timber; to turn; -- used also of any heavy body..
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..
Rotary :: Rotary (a.) Turning, as a wheel on its axis; pertaining to, or resembling, the motion of a wheel on its axis; rotatory; as, rotary motion..
Spiral :: Spiral (a.) Winding round a cylinder or imaginary axis, and at the same time rising or advancing forward; winding like the thread of a screw; helical..
Heterodromous :: Heterodromous (a.) Moving in opposite directions; -- said of a lever, pulley, etc., in which the resistance and the actuating force are on opposite sides of the fulcrum or axis..
Axis :: 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..
Ladies'' Tresses :: 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..
Stalk :: Stalk (n.) The stem or main axis of a plant; as, a stalk of wheat, rye, or oats; the stalks of maize or hemp..
Urochord :: Urochord (n.) The central axis or cord in the tail of larval ascidians and of certain adult tunicates.
Raceme :: Raceme (n.) A flower cluster with an elongated axis and many one-flowered lateral pedicels, as in the currant and chokecherry..
Nectostem :: Nectostem (n.) That portion of the axis which bears the nectocalyces in the Siphonophora.
Oblongum :: Oblongum (n.) A prolate spheroid; a figure described by the revolution of an ellipse about its greater axis. Cf. Oblatum, and see Ellipsoid of revolution, under Ellipsoid..
Neuron :: Neuron (n.) The brain and spinal cord; the cerebro-spinal axis; myelencephalon.
Counterbore :: Counterbore (n.) A kind of pin drill with the cutting edge or edges normal to the axis; -- used for enlarging a hole, or for forming a flat-bottomed recess at its mouth..
Windlass :: Windlass (n.) A machine for raising weights, consisting of a horizontal cylinder or roller moving on its axis, and turned by a crank, lever, or similar means, so as to wind up a rope or chain attached to the weight. In vessels the windlass is often used instead of the capstan for raising the anchor. It is usually set upon the forecastle, and is worked by hand or steam..
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