trochoid

/'trәukɒid/

n. 次摆线, 车轴关节

a. 车轴状的

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.

a. Admitting of rotation on an axis; -- sometimes applied to

a pivot joint like that between the atlas and axis in the vertebral

column.

a. Top-shaped; having a flat base and conical spire; -- said

of certain shells.

a. Of or pertaining to the genus Trochus or family

Trochidae.

See Epicycloid, any Trochoid.

See Hypocycloid, Epicycloid, and Trochoid.

Cycloids, epicycloids, hypocycloids, cardioids, etc., are all trochoids. a

Of or pertaining to a trochoid

having the properties of a trochoid. a

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更新时间：2025-09-22 07:22:59