cyclostome

noun

cy·​clo·​stome ˈsī-klə-ˌstōm How to pronounce cyclostome (audio)
: any of a class (Cyclostomata) of jawless fishes having a large sucking mouth and comprising the hagfishes and lampreys

Word History

Etymology

ultimately from Greek kykl- + stoma mouth — more at stomach entry 1

First Known Use

1835, in the meaning defined above

Time Traveler
The first known use of cyclostome was in 1835

Rhymes for cyclostome

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Browse Nearby Words

cyclostomate
cyclostome
cyclostomous
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Cite this Entry

“Cyclostome.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/cyclostome. Accessed 6 Jul. 2026.

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Medical Definition

cyclostome

noun
cy·​clo·​stome ˈsī-klə-ˌstōm, ˈsik-lə- How to pronounce cyclostome (audio)
: any vertebrate of the class or order Cyclostomata

More from Merriam-Webster on cyclostome

Britannica.com: Encyclopedia article about cyclostome

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