ACANTHOPTERYGIOUS

ACANTHOPTERYG'IOUS, a [Gr. a thorn, and a little feather, from a feather.]In zoology, having back fins which are hard, bony and pricky, a term applied to certain fishes.

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Ac′an‐thop′ter‐yg″i‐ous (�), a. (Zoöl.) Having fins in which the rays are hard and spinelike; spiny-finned.