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2 definitions found

From: Webster's Revised Unabridged Dictionary (1913)

 Ac·an·thop·ter·yg·i·an a. Zool. Belonging to the order of fishes having spinose fins, as the perch.  -- n. A spiny-finned fish.
 

From: WordNet (r) 2.0

 acanthopterygian
      n : a teleost fish with fins that are supported by sharp
          inflexible rays [syn: spiny-finned fish] [ant: soft-finned
          fish]