prostomium

noun

pro·​sto·​mi·​um prō-ˈstō-mē-əm How to pronounce prostomium (audio)
plural prostomia prō-ˈstō-mē-ə How to pronounce prostomium (audio)
: the portion of the head of an annelid worm (such as an earthworm) that is situated in front of the mouth
prostomial
prō-ˈstō-mē-əl How to pronounce prostomium (audio)
adjective

Word History

Etymology

New Latin, from Greek pro- + stoma mouth — more at stomach entry 1

First Known Use

1870, in the meaning defined above

Time Traveler
The first known use of prostomium was in 1870

Dictionary Entries Near prostomium

prostomiate

prostomium

prostrate

See More Nearby Entries 

Cite this Entry

“Prostomium.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/prostomium. Accessed 26 Nov. 2024.

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Britannica.com: Encyclopedia article about prostomium

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