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1. Oxford American Dictionary

   trochoid

   • IPA[ˈtrōˌkoid]

   美式

   • adj.
     denoting a joint in which one element rotates on its own axis (e.g. the atlas vertebra).；denoting a curve traced by a point on a radius of a circle rotating along a straight line or another circle (a cycloid, epicycloid, or hypocycloid).
   • n.
     a trochoid curve.；a trochoid joint.

   • noun: trochoid, plural noun: trochoids

2. • 釋義

   adj.

   形容詞

   • 1. denoting a joint in which one element rotates on its own axis (e.g. the atlas vertebra).
   • 2. denoting a curve traced by a point on a radius of a circle rotating along a straight line or another circle (a cycloid, epicycloid, or hypocycloid).
   • 3. having or denoting a form of mollusk shell which is conical with a flat base, like a top shell.

   n.

   名詞

   • 1. a trochoid curve.
   • 2. a trochoid joint.
3. • 更多解釋

   trochoid

   • IPA[ˈtrəʊkɔɪd]

   英式

   • adj.
     denoting a joint in which one element rotates on its own axis (e.g. the atlas vertebra).
   • n.
     a trochoid curve.

   Oxford Dictionary