The definition of an amphibian is a cold-blooded animal which can live on land or in water and who breathes with gills when young and with lungs as an adult.(noun)
A frog is an example of an amphibian.
See amphibian in Webster's New World College Dictionary
Origin: < ModL Amphibia < Gr amphibia, neut. pl. of amphibios: see amphibious
See amphibian in American Heritage Dictionary 4
Origin: From New Latin Amphibia, class name
Origin: , from Greek
Origin: , neuter pl. of amphibios, amphibious
Origin: : amphi-, amphi-
Origin: + bios, life; see gwei- in Indo-European roots.
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