amphibia

plural noun

am·​phib·​ia am-ˈfi-bē-ə 

: amphibians

Word History

Etymology

borrowed from New Latin — more at amphibian

First Known Use

1607, in the meaning defined above

Kids Definition

amphibia

plural noun

am·​phib·​ia am-ˈfib-ē-ə 

: amphibians

Medical Definition

Amphibia

noun plural

Am·​phib·​ia am-ˈfib-ē-ə 

1

: a class of subphylum Vertebrata comprising forms (as the frogs, toads, newts, and salamanders) that are intermediate in many respects between fishes and reptiles, are cold-blooded with nucleated red blood cells and a 3-chambered heart, and that have gilled aquatic larvae and air-breathing adults

2

: the members of the class Amphibia

amphibian

-ē-ən 

noun or adjective