acanthopterygii

from The Century Dictionary.

• A large group of fishes to which various limits and values have been assigned.

from the GNU version of the Collaborative International Dictionary of English.

• noun plural (Zoöl.) An order of fishes having some of the rays of the dorsal, ventral, and anal fins unarticulated and spinelike, as the perch.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun teleost fishes having fins with sharp bony rays