amphibian
/æmˈfɪbɪən/
/æmˈfɪbɪən/
noun
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An animal of the Amphibia; any four-legged vertebrate that does not have amniotic eggs, living both on land and in water.
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A vehicle which can operate on land and water. See Wikipedia article on "Amphibious aircraft"
Synonyms:
amphibium
adjective
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Of or relating to the class Amphibia.
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Capable of operating on both land and water amphibious.
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Having two natures.