a. [f. Gr. ἀκανθο- thorn + πτερ-όν wing + -OUS.] prop. Spiny-winged, as the Cassowary; but used also as spiny-finned = ACANTHOPTERYGIOUS.
1870. Rolleston, An. Life, 42. The perch, and indeed the entire Acanthopterous order to which it belongs.
