noun. Any of various cold-blooded, usually smooth-skinned vertebrates of the class Amphibia, characteristically hatching as an aquatic larva with gills and then transforming into an adult having air-breathing lungs. Frogs, toads, salamanders, and caecilians are amphibians.

noun. An animal capable of living both on land and in water.

noun. An aircraft that can take off and land on either land or water.

noun. A tracked or wheeled vehicle that can operate both on land and in water.

Of or pertaining to amphibia in any sense; specifically, pertaining to the class Amphibia. See amphibious, 2.

noun. An animal of the class Amphibia.

noun. One of the Amphibia.

adjective. Of or pertaining to the Amphibia.

adjective. Having two natures.

adjective. Pertaining to the Amphibia.

noun. An animal of the Amphibia; any four-legged vertebrate that does not have amniotic eggs, living both on land and in water.

noun. A vehicle which can operate on land and water.

adjective. Of or relating to the amphibians Amphibia.

adjective. Capable of operating on both land and water amphibious.

noun. a flat-bottomed motor vehicle that can travel on land or water

noun. cold-blooded vertebrate typically living on land but breeding in water; aquatic larvae undergo metamorphosis into adult form

adjective. relating to or characteristic of animals of the class Amphibia

noun. an airplane designed to take off and land on water