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: T T- T. Ta Tb Tc Td Te Th Ti Tj Tk Tl Tm Tn To Tp Tr Ts Tt Tu Tv Tw Tx Ty Tz
trochlea | trochlear | trochlear nerve | trochlearis | trochleary | trochoid | trochoidal | trochometer | trochosphere | trochus | troco


Adjective, Noun


trochoidn. [Gr. a wheel + -oid; cf. F. trochoïde. See Troche.].
     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.  [1913 Webster]
  •  Admitting of rotation on an axis; -- sometimes applied to a pivot joint like that between the atlas and axis in the vertebral column.  [1913 Webster]
  •  Top-shaped; having a flat base and conical spire; -- said of certain shells.  [1913 Webster]
  •  Of or pertaining to the genus Trochus or family Trochidæ.  [1913 Webster]


trochoid, adj. & n.
1 Anat. rotating on its own axis.
2 Geom. (of a curve) traced by a point on a radius of a circle rotating along a straight line or another circle.
--n. a trochoid joint or curve.

trochoidal adj.
Gk trokhoeides wheel-like f. trokhos wheel

For further exploring for "trochoid" in Webster Dictionary Online

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