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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
Ectothermic vertebrates belonging to the class Amphibia are collectively known as Amphibians. The term âectothermicâ means the physiological heat sources of these animals are insufficient for maintaining the proper body temperature. Amphibians belong to the superclass Tetrapoda or tetrapod. Frogs, toads, salamanders, newts and caecilians are different animals in the Amphibia class. The term Amphibian was derived from the Greek term âamphibiousâ, which means âboth livesâ or âtwo livesâ (âamphiâ meaning âbothâ and âbiosâ meaning âlifeâ).