Adjective: trochoid 'tró,koyd
- (anatomy) admitting of rotation on an axis; sometimes applied to a pivot joint like that between the atlas and axis in the vertebral column
"The trochoid joint allows for the rotational movement of the head"
- (of shells) having a flat base and conical spire
"Trochoid shells are common among certain marine snails"
- A curve traced by a point on a circle as it rolls along a straight line or another circle
"The trochoid curve is used in the design of some gear systems"
Derived forms: trochoids
Encyclopedia: Trochoid