any of an order (Nudibranchia) of marine gastropods without a shell and with external gills
Origin of nudibranch; from Modern Latin Nudibranchia: see nudi- and amp; branchiae
See sea slug.
Origin of nudibranchFrom New Latin N&umacron;dibranchia, order name : nudi– + branchia.
- A term for any sea slug; specifically the animals belonging to the suborder Nudibranchia, a clade within the informal group Opisthobranchia.