Definition of nudibranch
: any of an order (Nudibranchia) of marine opisthobranch mollusks without a shell in the adult state and without true gills
Recent Examples of nudibranch from the Web
Name a flashy color, and there’s probably a nudibranch that rocks it, like a 1980s neon nightmare.
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Origin and Etymology of nudibranch
New Latin Nudibranchia, from Latin nudus + Greek branchia gills
First Known Use: 1844See Words from the same year
Learn More about nudibranch
Britannica.com: Encyclopedia article about nudibranch
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