amphibian

noun am·phib·i·an \ -bē-ən \
|Updated on: 6 Jun 2018

Definition of amphibian

1 : an amphibious organism; especially : any of a class (Amphibia) of cold-blooded vertebrates (such as frogs, toads, or salamanders) intermediate in many characters between fish and reptiles and having gilled aquatic larvae and air-breathing adults
  • Unlike reptiles, most amphibians possess a smooth, moist skin and lay their shell-less eggs in water or wet places.
  • —Jeffrey P. Cohn
2 : an amphibious vehicle; especially : an airplane designed to take off from and land on either land or water

amphibian

adjective

Recent Examples of amphibian from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'amphibian.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

Origin and Etymology of amphibian

ultimately from Greek amphibion amphibious being, from neuter of amphibios


AMPHIBIAN Defined for English Language Learners

amphibian

Definition of amphibian for English Language Learners

  • : an animal (such as a frog or toad) that can live both on land and in water

  • : an airplane or vehicle that can be used both on land and water


AMPHIBIAN Defined for Kids

amphibian

noun am·phib·i·an \ am-ˈfi-bē-ən \

Definition of amphibian for Students

1 : any of a group of cold-blooded vertebrate animals (as frogs and toads) that have gills and live in water as larvae but breathe air as adults
2 : an airplane designed to take off from and land on either land or water


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