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

Orientation :: 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..

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..

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

Paraboloid :: Paraboloid (n.) The solid generated by the rotation of a parabola about its axis; any surface of the second order whose sections by planes parallel to a given line are parabolas.

Gyroscope :: Gyroscope (n.) A rotating wheel, mounted in a ring or rings, for illustrating the dynamics of rotating bodies, the composition of rotations, etc. It was devised by Professor W. R. Johnson, in 1832, by whom it was called the rotascope..

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

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..

Stationed :: Station (n.) One of the places at which ecclesiastical processions pause for the performance of an act of devotion; formerly, the tomb of a martyr, or some similarly consecrated spot; now, especially, one of those representations of the successive stages of our Lord's passion which are often placed round the naves of large churches and by the side of the way leading to sacred edifices or shrines, and which are visited in rotation, stated services being performed at each; -- called also Station o

Couple :: Couple (a.) Two rotations, movements, etc., which are equal in amount but opposite in direction, and acting along parallel lines or around parallel axes..

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..

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..

Wheely :: Wheely (a.) Circular; suitable to rotation.

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.

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..

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..

Cycloscope :: Cycloscope (n.) A machine for measuring at any moment velocity of rotation, as of a wheel of a steam engine..

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

Trochoid :: 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.

Operameter :: Operameter (n.) An instrument or machine for measuring work done, especially for ascertaining the number of rotations made by a machine or wheel in manufacturing cloth; a counter..

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