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vespertilian

adjective

ves·​per·​til·​ian ˌve-spər-ˈti-lē-ən How to pronounce vespertilian (audio)
-ˈtil-yən
: of, relating to, or resembling a bat
… flaunts vespertilian wing and cloven hoof …Robert Graves

Word History

Etymology

Latin vespertilio bat, from vesper

First Known Use

1874, in the meaning defined above

Time Traveler
The first known use of vespertilian was in 1874

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Cite this Entry

“Vespertilian.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/vespertilian. Accessed 29 Nov. 2025.

Last Updated: - Definition revised
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