rotula

noun — 2 senses

rotula

noun

Etymology Learned borrowing from Latin rotula. Doublet of role and roll.

1

Anatomy, Medicine, Sciences The patella; the kneecap.

2

Biology, Natural sciences, Zoology One of the five radial pieces in the dentary apparatus of the sea urchin.

Derived terms
rotular

Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.