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2 definitions found

From: DICT.TW English-Chinese Dictionary 英漢字典

 Orthopoda
 直足亞目

From: Webster's Revised Unabridged Dictionary (1913)

 Or·thop·o·da prop. n. pl.  Zool. An extinct order of reptiles which stood erect on the hind legs, and resembled birds in the structure of the feet, pelvis, and other parts.