coelenteron

noun
coe·​len·​ter·​on | \ si-ˈlen-tə-ˌrän How to pronounce coelenteron (audio) , -rən\
plural coelentera\ si-​ˈlen-​tə-​rə How to pronounce coelentera (audio) \

Definition of coelenteron

: the internal cavity of a cnidarian

First Known Use of coelenteron

1885, in the meaning defined above

History and Etymology for coelenteron

New Latin, from Greek koilos + enteron

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The first known use of coelenteron was in 1885

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Britannica.com: Encyclopedia article about coelenteron

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