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he quality possessed by some crystals of presenting different colors in three different directions.

Curved in three directions; as, a tricurvate spicule (see Illust. of Spicule).

A curve of third order, having three infinite branches in the direction and a fourth infinite branch in the opposite direction. Trident bat (Zoöl.), an Asiatic rhinolophid bat (Triænops Persicus), having the nose membrane in the shape of a trident.

Having three dimensions; extended in three different directions.

Modification of the direction of growth.

ct of one or more streams of water, conducted so as to strike against the floats in the direction of a tangent to the cylinder.

wholly, or repeatedly; to make to change position so as to present other sides in given directions; to make to face otherwise; as, to turn a wheel or a spindle; to turn the body or the head. Turn the adamantine spindle round. Milton. The monarch turns him to his royal guest. Pope.

large revolving platform, for turning railroad cars, locomotives, etc., in a different direction; -- called also turnplate.

ron turrets, which may be rotated, so that the guns may be made to bear in any required direction.

All; -- a direction for all the singers or players to perform together. Moore (Encyc. of Music).

To change the direction of. [Obs.] Fairfax.

Capable of being thrown or cranked in two directions, usually opposite to one another; as, a two-throw crank; a two-throw switch.

ections are all equal to each other. A sphere may be osculatory to the surface in every direction at an umbilicus. Called also umbilic.

Incorrigible; not capable of correction. [Obs.]

A current below the surface of water, sometimes flowing in a contrary direction to that on the surface. Totten.

Not directed; not guided; left without direction.

nuously among its particles, but with no translation of the particles themselves in the direction of the propagation of the wave; a wave motion; a vibration.

er, that of color on the latter. The undulations are supposed to take place, not in the direction of propagation, as in the air waves constituting sound, but transversely, and the various phenomena of refraction, polarization, interference, etc., are attributable to the different affections of these undulations in diff…

ive rotary motion to the other when forming an angle with it, or may move freely in all directions with respect to the other, as by means of a cross connecting the forked ends of the two shafts (Fig. 1). Since this joint can not act when the angle of the shafts is less than 140º, a double joint of the same kind is some…

Aloft; on high; in a direction contrary to that of gravity; toward or in a higher place or position; above; -- the opposite of Ant: down. But up or down, By center or eccentric, hard to tell. Milton.