Definition of axis

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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..

Lern More About Axis

Drop :: Drop (n.) The distance of the axis of a shaft below the base of a hanger.
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..
Danaide :: Danaide (n.) A water wheel having a vertical axis, and an inner and outer tapering shell, between which are vanes or floats attached usually to both shells, but sometimes only to one..
Radiata :: Radiata (n. pl.) An extensive artificial group of invertebrates, having all the parts arranged radially around the vertical axis of the body, and the various organs repeated symmetrically in each ray or spheromere..
Preaxial :: Preaxial (a.) Situated in front of any transverse axis in the body of an animal; anterior; cephalic; esp., in front, or on the anterior, or cephalic (that is, radial or tibial) side of the axis of a limb..
Parietal :: Parietal (a.) Attached to the main wall of the ovary, and not to the axis; -- said of a placenta..
Lap :: Lap (n.) A piece of brass, lead, or other soft metal, used to hold a cutting or polishing powder in cutting glass, gems, and the like, or in polishing cutlery, etc. It is usually in the form of wheel or disk, which revolves on a vertical axis..
Homotaxis :: Homotaxis (n.) Similarly in arrangement of parts; -- the opposite of heterotaxy.
Wheel :: Wheel (n.) A circular frame turning about an axis; a rotating disk, whether solid, or a frame composed of an outer rim, spokes or radii, and a central hub or nave, in which is inserted the axle, -- used for supporting and conveying vehicles, in machinery, and for various purposes; as, the wheel of a wagon, of a locomotive, of a mill, of a watch, etc..
Whirligig :: Whirligig (n.) A child's toy, spun or whirled around like a wheel upon an axis, or like a top..
Tubicorn :: Tubicorn (n.) Any ruminant having horns composed of a bony axis covered with a horny sheath; a hollow-horned ruminant.
Ordinate :: Ordinate (n.) The distance of any point in a curve or a straight line, measured on a line called the axis of ordinates or on a line parallel to it, from another line called the axis of abscissas, on which the corresponding abscissa of the point is measured..
Capitulum :: Capitulum (n.) A thick head of flowers on a very short axis, as a clover top, or a dandelion; a composite flower. A capitulum may be either globular or flat..
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.
Revolve :: Revolve (v. i.) To turn or roll round on, or as on, an axis, like a wheel; to rotate, -- which is the more specific word in this sense..
Fly :: Fly (v. i.) A heavy wheel, or cross arms with weights at the ends on a revolving axis, to regulate or equalize the motion of machinery by means of its inertia, where the power communicated, or the resistance to be overcome, is variable, as in the steam engine or the coining press. See Fly wheel (below)..
Monaxial :: Monaxial (a.) Having only one axis; developing along a single line or plane; as, monaxial development..
Hypaxial :: Hypaxial (a.) Beneath the axis of the skeleton; subvertebral; hyposkeletal.
Monoclinal :: Monoclinal (a.) Having one oblique inclination; -- applied to strata that dip in only one direction from the axis of elevation.
Gimbals :: 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..
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