1 opisthobranch | Definition of opisthobranch
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opisthobranch

noun
opis·​tho·​branch | \ É™-ˈpis-thÉ™-ËŒbraÅ‹k How to pronounce opisthobranch (audio) \
plural opisthobranchs

Definition of opisthobranch

: any of a subclass (Opisthobranchia) of marine gastropod mollusks that have the gills when present posterior to the heart and often lack a shell

Other Words from opisthobranch

opisthobranch adjective

First Known Use of opisthobranch

1851, in the meaning defined above

History and Etymology for opisthobranch

New Latin Opisthobranchia, from Greek opisthen behind (akin to Greek epi on) + branchia gills — more at epi-

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More from Merriam-Webster on opisthobranch

Britannica.com: Encyclopedia article about opisthobranch

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