rot·​u·​la | \ ˈrächələ \
plural rotulas\ -​ləz \ or rotulae\ -​ˌlē \

Definition of rotula

2 : one of the five radial pieces intervening between the alveoli and extending inward toward the esophagus in the Aristotle's lantern of a sea urchin
3 : troche

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Other Words from rotula

rotular \ -​lə(r) \ adjective
rotulian \ räˈtülēən , rä‧ˈtyü-​ , räˈchü-​ \ adjective

First Known Use of rotula

14th century, in the meaning defined at sense 1

History and Etymology for rotula

in sense 1, from Middle English, from Medieval Latin, from Latin, little wheel; in other senses, from New Latin, from Latin

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The first known use of rotula was in the 14th century

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Cite this Entry

“Rotula.” Dictionary, Merriam-Webster, Accessed 20 Oct. 2020.

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