Definitions

1. noun

A curve or figure resulting from the motion of a point on a circle or other curve that rolls on another curve.

“The engineer studied the trochoids of the gear’s teeth to optimize its performance.”

2. noun

In embryology, a trochoid is a corkscrew-shaped or spiral structure such as a ciliated epithelial cell or a coelomic cavity.

“The embryologist observed the trochoids of the embryo’s cells under a microscope.”