| hypocycloid | ไฮโพไซคลอยด์ [คณิตศาสตร์๑๙ ก.ค. ๒๕๔๗] |
| hypocycloid | (n) a line generated by a point on a circle that rolls around inside another circle |
| Hypocycloid | n. [ Pref. hypo- + cycloid: cf. F. hypocycloïde. ] (Geom.) 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. [ 1913 Webster ] |