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Opisthobranchia


Definition of Opisthobranchia

noun

Zoology
  • a group of molluscs which includes the sea slugs and sea hares. They have a small or absent shell and are typically brightly coloured with conspicuous external gills.
    • Subclass Opisthobranchia, class Gastropoda

Derivatives

opisthobranch


noun

Origin:

modern Latin (plural), from opistho- 'to the rear' + brankhia 'gills'

Opisthobranchia in other Oxford dictionaries

Definition of Opisthobranchia in the US English dictionary