[ am-fib-ee-uh s ]
/ æmˈfɪb i əs /


living or able to live both on land and in water; belonging to both land and water.
Also amphibian. capable of operating on both land and water: amphibious vehicles.
of or relating to military operations by both land and naval forces against the same object, especially to a military attack by troops landed by naval ships.
trained or organized to fight, or fighting, on both land and sea: amphibious troops.
combining two qualities, kinds, traits, etc.; of or having a mixed or twofold nature.

Nearby words

  1. amphibaric,
  2. amphibia,
  3. amphibian,
  4. amphibians,
  5. amphibiotic,
  6. amphiblastic,
  7. amphiblastula,
  8. amphibole,
  9. amphibolic,
  10. amphibolic fistula

Origin of amphibious

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

Related forms Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for amphibious

British Dictionary definitions for amphibious


/ (æmˈfɪbɪəs) /


able to live both on land and in the water, as frogs, toads, etc
designed for operation on or from both water and land
relating to military forces and equipment organized for operations launched from the sea against an enemy shore
having a dual or mixed nature
Derived Formsamphibiously, adverbamphibiousness, noun

Word Origin for amphibious

C17: from Greek amphibios, literally: having a double life, from amphi- + bios life

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for amphibious



1640s, from Greek amphibios "having a double life" (see amphibian). Of motor vehicles, from 1915.

Online Etymology Dictionary, © 2010 Douglas Harper