trochoid – מילון אנגלי-אנגלי
trochoid
adj.
having a wheel-like rotary motion
Trochoid
A
trochoid (from the Greek word for wheel, "trochos") is the
curve described by a fixed point on a
circle as it rolls along a straight line. The
cycloid is a notable member of the trochoid family. The word "trochoid" was coined by
Gilles de Roberval.
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.
(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.
(a.)
Admitting of rotation on an axis; -- sometimes applied to a pivot joint like that between the atlas and axis in the vertebral column.
Webster's Revised Unabridged Dictionary (1913), edited by Noah Porter.
About
trochoid
TROCHOID
TROCOIDE
