Origin of amphibian
Examples from the Web for amphibian
The first frog who crosses your path can tell you all about the pleasures of the double existence of the amphibian.The Story of Mankind|Hendrik Van Loon
The accidental transportal of an amphibian from the mainland to an island is therefore almost inconceivable.The History of the European Fauna|R. F. Scharff
Now and then there was a splash as some amphibian, more lucky than his fellows, dived through the crowfoots into the pond.Lives of the Fur Folk|M. D. Haviland
Thus if it be supposed that the amphibian arose from the fish, the tadpole presents more resemblance to the fish than the frog.The Origin of Vertebrates|Walter Holbrook Gaskell
The reptile now evolved from the amphibian, and a vast reptile population spread over the earth.
British Dictionary definitions for amphibian
Word Origin and History for amphibian
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.
Science definitions for amphibian
Amphibians, not quite fish and not quite reptiles, were the first vertebrates to live on land. These cold-blooded animals spend their larval stage in water, breathing through their gills. In adulthood they usually live on land, using their lungs to breath air. This double life is also at the root of their name, amphibian, which, like many scientific words, derives from Greek. The Greek prefix amphi- means both, or double, and the Greek word bios means life. Both these elements are widely used in English scientific terminology: bios, for example, is seen in such words as biology, antibiotic, and symbiotic.