amphibious

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amphibious

able to live both on land and in the water, as frogs, toads, etc.
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005

amphibious

[‚am′fib·ē·əs]
(biology)
Capable of living both on dry or moist land and in water.
(mechanical engineering)
Said of vehicles or equipment designed to be operated or used on either land or water.
(ordnance)
A military operation conducted by coordinated action of land, sea, and air forces.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.