1
: able to live both on land and in water
amphibious plants/animals
2
: able to be used both on land and water
amphibious airplanes/vehicles
3
: done by soldiers who are brought to land in special boats : carried out by land and sea forces acting together
an amphibious assault/landing
Cite this Entry
“Amphibious.” Merriam-Webster.com Simple Definition, Merriam-Webster, https://www.merriam-webster.com/simple/amphibious. Accessed 19 Jun. 2026.
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