Definition of Nudibranchia
: a suborder of Opisthobranchia comprising numerous highly varied marine gastropod mollusks lacking a shell in the adult state and without true ctenidia and typically having a body suggesting that of a slug usually with brightly colored often branching respiratory cerata on the back
nudibranchiate\-ēə̇t, -ēˌāt\ adjective or noun
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Origin and Etymology of nudibranchia
New Latin, from nudi- + -branchia
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