Opisthobranch Definition

ə-pĭsthə-brăngk
opisthobranchs
noun
Any of a group of marine gastropods characterized by gills located behind the heart, a shell that is reduced or absent, and two pairs of tentacles, and including the sea slugs and the sea butterflies.
American Heritage

Other Word Forms of Opisthobranch

Noun

Singular:
opisthobranch
Plural:
opisthobranchs

Origin of Opisthobranch

  • From New Latin Opisthobranchia former subclass name Greek opistho- behind opisthognathous Greek brankhia gills

    From American Heritage Dictionary of the English Language, 5th Edition

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