amphibian
amphibian
/æmˈfɪbiən/
any animal that can live both on land and in water. Amphibians have cold blood and skin without scales. Frogs, toads and newts are all amphibians.
Word Origin
mid 17th cent. (in the sense ‘having two modes of existence or of doubtful nature’): from modern Latin amphibium ‘an amphibian’, from Greek amphibion (noun use of amphibios ‘living both in water and on land’, from amphi ‘both’ + bios ‘life’).