'Dipterygian' definitions:

Definition of 'Dipterygian'

From: GCIDE
  • Dipterygian \Dip`ter*yg"i*an\, a. [Gr. di- = di`s- twice + ? a fin, dim. of ? wing.] (Zool.) Having two dorsal fins; -- said of certain fishes. [1913 Webster]