Definition of amphibian in English:

amphibian

Syllabification: am·phib·i·an
Pronunciation: /amˈfibēən
 
/

noun

Zoology
1A cold-blooded vertebrate animal of a class that comprises the frogs, toads, newts, and salamanders. They are distinguished by having an aquatic gill-breathing larval stage followed (typically) by a terrestrial lung-breathing adult stage.
  • Class Amphibia: orders Urodela (newts and salamanders), Anura (frogs and toads), and Gymnophiona (caecilians)
More example sentences
  • Spadefoot toads are desert-dwelling amphibians that breed opportunistically in short lived pools filled by periodic rainfall.
  • Secondarily aquatic adult amphibians provide another source of diversity.
  • Among vertebrates, newts and other urodele amphibians show a remarkable capacity for regeneration.
1.1A seaplane, tank, or other vehicle that can operate on land and on water.
More example sentences
  • It says no other road-legal amphibian has managed to exceed 6mph on water.
  • Unfortunately for them, in December of 1941 the company was also given the go-ahead to develop an amphibian.

adjective

Zoology Back to top  
Of or relating to amphibians: reptile and amphibian biology
More example sentences
  • In both mammalian and amphibian eggs, integrins have been proposed as putative sperm receptors.
  • In dry years, such as the year of this study, ponds were dry by mid-June, invertebrate and amphibian larvae were unable to develop enough to metamorphose and emerge from the water.
  • Perhaps 10 to 30 percent of Earth's mammal, bird, and amphibian species are facing extinction.

Origin

mid 17th century (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').

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