re·​tin·​u·​la re-ˈtin-yə-lə How to pronounce retinula (audio)
plural retinulae re-ˈtin-yə-ˌlē How to pronounce retinula (audio)
also retinulas
: the neural receptor of a single facet of an arthropod compound eye
retinular adjective

Word History


New Latin, diminutive of Medieval Latin retina

First Known Use

1878, in the meaning defined above

Time Traveler
The first known use of retinula was in 1878

Dictionary Entries Near retinula

Cite this Entry

“Retinula.” Dictionary, Merriam-Webster, Accessed 23 Apr. 2024.

More from Merriam-Webster on retinula

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!