Amphibia amphibalus • amphibial · · · Info · Definitions · Synonyms · Characters · · Amphibia · · Text Latin · · Script 8 · · Length Definitions · · · (noun) the class of vertebrates that live on land but breed in water; frogs; toads; newts; salamanders; caecilians. Synonyms: amphibia, class Amphibia. · · Noun Definition 1 Synonyms · · · class amphibia · · Synonym 1 Characters · · A latin capital letter a U+0041 a latin small letter a U+0061 b latin small letter b U+0062 h latin small letter h U+0068 i latin small letter i U+0069 m latin small letter m U+006D p latin small letter p U+0070