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Webster Dictionary (0.00 / 0 votes) Rate this definition: Amphi- a prefix in words of Greek origin, signifying both, of both kinds, on both sides, about, around
Amphi = Both Bian = Life. Amphibians are vertebrates that live part of their lives in water and part on land. They are considered to be the modern day representatives of the transition between fish and reptiles.Most amphibians have thin, moist skin, protected by a layer of mucus.n land, the limbs give considerable propulsion to the body. Their limbs are sprawled out from the body, and the middle of the trunk usually rests on the ground, in contrast to lizards whose legs are under the body and raise it above the ground.