'Propterygium' definitions:

Definition of 'Propterygium'

From: GCIDE

Propterygium \Prop`te*ryg"i*um\, n.; pl. Propterygia. [NL., fr. Gr. ? before + ? a fin.] (Anat.) The anterior of three principal cartilages in the fins of some fishes. -- {Prop`ter*yg"i*al}, a. [1913 Webster]