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|n.||1.||(Zool.) An order of ganoid fishes, including the modern gar pikes and many allied fossil forms. They have rhombic, ganoid scales, a heterocercal tail, paired fins without an axis, fulcra on the fins, and a bony skeleton, with the vertebræ convex in front and concave behind, forming a ball and socket joint. See Ganoidel.|
Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.