Definition of ophidioid in US English:

ophidioid

adjective

Zoology
  • Of or relating to eel-like fishes of the suborder Ophidioidei (order Ophidiiformes), comprising the cusk-eels and related forms.

noun

Zoology
  • A fish of the suborder Ophidioidei.

Origin

Mid 19th century. From scientific Latin Ophidium or Ophidion Ophidion + -oid.