bipedalPronunciation: /bʌɪˈpiːd(ə)l/Definition of bipedal adjective Zoology (of an animal) using only two legs for walking. Derivatives bipedalism noun bipedalityPronunciation: /ˌbʌɪpiːˈdalɪti/ noun bipedal in other Oxford dictionaries Definition of bipedal in the US English dictionary