EXAMPLES FROM THE WEB FOR AMPHIBIAN
The locked controls held the amphibian for perhaps thirty seconds.
Bell had a raft of canes afloat beside the amphibian when she waked.
"You will not be allowed to cause any more trouble," the amphibian declared, coldly.
And then we have still the amphibian, the lizard, and the bird or mammal, up to man.
But I do think it wise to keep the story of the amphibian and its pilot to ourselves.
She wanted to compare notes with the owner of this amphibian.
Dorothy stopped swimming when she was a few yards from the amphibian.
It was toward this that the pilot of the amphibian nosed his craft.
The most primitive Amphibian shoulder-girdle is found in the Urodela.
The amphibian bobbed and swayed at the push of little waves.
WORD ORIGIN
1630s, "having two modes of existence, of doubtful nature," from Greek amphibia, neuter plural of amphibios "living a double life," from amphi- "of both kinds" (see amphi-) + bios "life" (see bio-).
Formerly used by zoologists to describe all sorts of combined natures (including otters and seals), the biological sense "class of animals between fishes and reptiles that live both on land and in water" and the noun derivative both are first recorded 1835. Amphibia was used in this sense from c.1600 and has been a zoological classification since c.1819.