| hypocycloid | <geometry> A curve traced by a point in the circumference of a circle which rolls on the concave side in the fixed circle. Cf. Epicycloid, and Trochoid. Origin: F. Hypocycloide. Source: Websters Dictionary (01 Mar 1998) |
|---|---|
| hypocycloidal | A tricyclic motion used by mechanical tomography units to optimise blurring and reduce artifacts. Origin: hypo-+ G. Kuklos, circle, + -oeides, appearance (05 Mar 2000) |