cyclostome

noun
cy·​clo·​stome | \ˈsī-klə-ˌstōm \

Definition of cyclostome 

: any of a class (Cyclostomata) of jawless fishes having a large sucking mouth and comprising the hagfishes and lampreys

First Known Use of cyclostome

1835, in the meaning defined above

History and Etymology for cyclostome

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

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The first known use of cyclostome was in 1835

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cyclostome

noun
cy·​clo·​stome | \ˈsī-klə-ˌstōm, ˈsik-lə- \

Medical Definition of cyclostome 

: any vertebrate of the class or order Cyclostomata

More from Merriam-Webster on cyclostome

Britannica.com: Encyclopedia article about cyclostome

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