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n.1.(Anat.) The anterior of three principal cartilages in the fins of some fishes.
Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
References in periodicals archive ?
The procondyle articulates with the propterygium; the mesocondyle with the mesopterygium, and the metacondyle with the metapterygium, which are located along the horizontal axis of the scapulacoracoid.
Total pectoral-fin radials 106-107 (105-107); propterygium 41-42 (40-41), mesopterygium 21 (19-20), metapterygium 44 (46).
Ethmoideo-parethmoidalis muscle (EPE): originates on the anterior part of the neurocranium, at the level of the anterior foramen of the preorbital channel, running posteriorly along the internal margin of the propterygium, inserting on its internal margin.