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Rotation :: Rotation (n.) The act of turning, as a wheel or a solid body on its axis, as distinguished from the progressive motion of a revolving round another body or a distant point; thus, the daily turning of the earth on its axis is a rotation; its annual motion round the sun is a revolution..

Rotation :: Rotation (n.) Any return or succesion in a series.

Rolling :: Rolling (a.) Rotating on an axis, or moving along a surface by rotation; turning over and over as if on an axis or a pivot; as, a rolling wheel or ball..

Rotatory :: Rotatory (a.) Going in a circle; following in rotation or succession; as, rotatory assembles..

Tachometer :: Tachometer (n.) An instrument for measuring the velocity of running water in a river or canal, consisting of a wheel with inclined vanes, which is turned by the current. The rotations of the wheel are recorded by clockwork..

Following :: Following (a.) (In the field of a telescope) In the direction from which stars are apparently moving (in consequence of the earth's rotation); as, a small star, north following or south following. In the direction toward which stars appear to move is called preceding..

Glissette :: Glissette (n.) The locus described by any point attached to a curve that slips continuously on another fixed curve, the movable curve having no rotation at any instant..

Rote :: Rote (v. i.) To go out by rotation or succession; to rotate.

Rotation :: Rotation (a.) Pertaining to, or resulting from, rotation; of the nature of, or characterized by, rotation; as, rotational velocity..

Cylinder :: Cylinder (n.) A solid body which may be generated by the rotation of a parallelogram round one its sides; or a body of rollerlike form, of which the longitudinal section is oblong, and the cross section is circular..

Circumrotation :: Circumrotation (n.) The act of rolling or revolving round, as a wheel; circumvolution; the state of being whirled round..

Contrarotation :: Contrarotation (n.) Circular motion in a direction contrary to some other circular motion.

Verticity :: Verticity (n.) The quality or power of turning; revolution; rotation.

Wabble :: Wabble (v. i.) To move staggeringly or unsteadily from one side to the other; to vacillate; to move the manner of a rotating disk when the axis of rotation is inclined to that of the disk; -- said of a turning or whirling body; as, a top wabbles; a buzz saw wabbles..

Whirl :: Whirl (v. t.) A turning with rapidity or velocity; rapid rotation or circumvolution; quick gyration; rapid or confusing motion; as, the whirl of a top; the whirl of a wheel..

Circumduction :: Circumduction (n.) The rotation of a limb round an imaginary axis, so as to describe a concial surface..

Revolution :: Revolution (n.) The act of revolving, or turning round on an axis or a center; the motion of a body round a fixed point or line; rotation; as, the revolution of a wheel, of a top, of the earth on its axis, etc..

Swivel :: Swivel (a.) A piece, as a ring or hook, attached to another piece by a pin, in such a manner as to permit rotation about the pin as an axis..

Irrotational :: Irrotational (a.) Not rotatory; passing from one point to another by a movement other than rotation; -- said of the movement of parts of a liquid or yielding mass.

Screw :: Screw (n.) A straight line in space with which a definite linear magnitude termed the pitch is associated (cf. 5th Pitch, 10 (b)). It is used to express the displacement of a rigid body, which may always be made to consist of a rotation about an axis combined with a translation parallel to that axis..

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