rotula

noun

rot·​u·​la
ˈrächələ
plural rotulas
-ləz
or rotulae
-ˌlē
1
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
rotular
-lə(r)
adjective
rotulian
räˈtülēən
rä‧ˈtyü-
räˈchü-
adjective

Word History

Etymology

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

First Known Use

14th century, in the meaning defined at sense 1

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

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Cite this Entry

“Rotula.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/rotula. Accessed 23 Jul. 2024.

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