† osteopteryginousadj. [ < osteo-comb. form + -pteryginous, altered form of -pterygiouscomb. form, perhaps after other forms in -ginous (compare e.g. cartilaginousadj.); compare scientific Latin Osteopterygii (introduced as Ostinopterygii by W. S. MacLeay (1841))] IchthyologyObsoleterare (of fishes) having bony fins.
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1847 T. R. Jones in Todd's Cycl. Anat. & Physiol. III. 1005/2 Innumerable races of the osteopteryginous Fishes exhibit powers of reproduction equally extraordinary.