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‖n. pl. [ NL., fr. Gr. &unr_; cartilage + &unr_;, &unr_;, wing, fin. ] (Zool.) A group of fishes, characterized by cartilaginous fins and skeleton. It includes both ganoids (sturgeons, etc.) and selachians (sharks), but is now often restricted to the latter. [ Written also Chondropterygia. ] [ 1913 Webster ]