Definition of amphibious
1
: combining two characteristics
2a
: relating to or adapted for both land and water
amphibious vehicles
b
: executed by coordinated action of land, sea, and air forces organized for invasion
an amphibious landing
also
: trained or organized for such action
amphibious forces
3
: able to live both on land and in water
amphibious plants
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Merriam-Webster unabridged
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Time Traveler for amphibious
The first known use of amphibious was in 1608
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