amphibious

[am-fib-ee-uhs]
adjective
1.
living or able to live both on land and in water; belonging to both land and water.
2.
Also, amphibian. capable of operating on both land and water: amphibious vehicles.
3.
of or pertaining to military operations by both land and naval forces against the same object, especially to a military attack by troops landed by naval ships.
4.
trained or organized to fight, or fighting, on both land and sea: amphibious troops.
5.
combining two qualities, kinds, traits, etc.; of or having a mixed or twofold nature.

Origin:
1635–45; < Latin amphibius < Greek amphíbios living a double life. See amphi-, bio-, -ous

amphibiously, adverb
amphibiousness, noun
nonamphibious, adjective
nonamphibiously, adverb
nonamphibiousness, noun
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
amphibious (æmˈfɪbɪəs)
 
adj
1.  able to live both on land and in the water, as frogs, toads, etc
2.  designed for operation on or from both water and land
3.  relating to military forces and equipment organized for operations launched from the sea against an enemy shore
4.  having a dual or mixed nature
 
[C17: from Greek amphibios, literally: having a double life, from amphi- + bios life]
 
am'phibiously
 
adv
 
am'phibiousness
 
n

Collins English Dictionary - Complete & Unabridged 10th Edition
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Etymonline
Word Origin & History

amphibious
1640s, from Gk. amphibios (see amphibian). Of motor vehicles, from 1915.
Online Etymology Dictionary, © 2010 Douglas Harper
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Example sentences
Mosses are the amphibious descendants of aquatic algae.
But, alone among the sea snakes, they are amphibious and able to spend up to ten days at a time on land.
In winter, it can glide over snow and ice while pulled by amphibious tractors.
Keen's water-ready version of their bestselling amphibious sandal.
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