Index of English words, starting with "tr"

(1) - Trochlear (n.) Shaped like, or resembling, a pulley; pertaining to, or connected with, a trochlea; as, a trochlear articular surface; the trochlear muscle of the eye.

(1) - Trochoid (a.) Of or pertaining to the genus Trochus or family Trochidae.
(2) - Trochoid (a.) Top-shaped; having a flat base and conical spire; -- said of certain shells.
(3) - 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.
(4) - Trochoid (n.) The curve described by any point in a wheel rolling on a line; a cycloid; a roulette; in general, the curve described by any point fixedly connected with a moving curve while the moving curve rolls without slipping on a second fixed curve, the curves all being in one plane. Cycloids, epicycloids, hypocycloids, cardioids, etc., are all trochoids.

(1) - Trochoidal (a.) See Trochoid, a.
(2) - Trochoidal (a.) Of or pertaining to a trochoid; having the properties of a trochoid.