Crossopterygii \Cros*sop`te*ryg"i*i\ (kr?s-s?p`t?-r?j?-?), n. pl. [NL., fr. Gr. ??? tassels, a fringe + ?????, dim. of ???? wing, fin.]

(Zo["o]l.) An order of ganoid fishes including among living species the bichir (Polypterus). See Brachioganoidei.

Source: Webster's Revised Unabridged Dictionary (1913)