ephemerid

noun

ephem·​er·​id i-ˈfe-mə-rəd How to pronounce ephemerid (audio)
: mayfly

Word History

Etymology

ultimately from Greek ephēmeron

First Known Use

1872, in the meaning defined above

Time Traveler
The first known use of ephemerid was in 1872

Dictionary Entries Near ephemerid

ephemeran

ephemerid

Ephemerida

See More Nearby Entries 

Cite this Entry

“Ephemerid.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ephemerid. Accessed 28 Apr. 2024.

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