ichthyosaur Meaning, Definition & Usage

  1. noun any of several marine reptiles of the Mesozoic having a body like a porpoise with dorsal and tail fins and paddle-shaped limbs

WordNet

Ich"thy*o*saur noun
Etymology
Cf. F. ichthyosaure.
Definitions
  1. (Paleon.) One of the Ichthyosaura.

Webster 1913