A cold-blooded, smooth-skinned vertebrate of the class Amphibia. Amphibians hatch as aquatic larvae with gills and, in most species, then undergo metamorphosis into four-legged terrestrial adults with lungs for breathing air. The eggs of amphibians are fertilized externally and lack an amnion. Amphibians evolved from lobe-finned fish during the late Devonian Period and include frogs, toads, newts, salamanders, and caecilians.
Consisting of, relating to, or being in water:
Find another word for amphibious. In this page you can discover 11 synonyms, antonyms, idiomatic expressions, and related words for amphibious, like: amphibian, aquatic, terrestrial, antisubmarine, unmanned, , landing-craft, , armoured, carrier based and missile-firing.