am·​phib·​i·​ous | \am-ˈfi-bē-əs \

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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Other Words from amphibious

amphibiously adverb
amphibiousness noun

Examples of amphibious in a Sentence

Recent Examples on the Web

Japan has officially activated its first amphibious combat unit since World War II. Kyle Mizokami, Popular Mechanics, "Japan Activates First Amphibious Unit Since World War II," 10 Apr. 2018 The Australian win is the second this month for the British arms maker: Last week the Pentagon selected BAE to build amphibious assault vehicles for the Marine Corps, a deal that could be worth $1.2 billion. Rob Taylor, WSJ, "Australia’s $26 Billion Warship Deal Goes to Britain’s BAE," 28 June 2018 The Emiratis turned to France, which agreed to provide the minesweepers to clear explosives that Houthi fighters had been placing in Al Hudaydah harbor, the official said, effectively thwarting for now an amphibious assault of the port. Margaret Coker, New York Times, "As Saudis Go to War, the Crown Prince Attends a Soccer Match," 14 June 2018 The brilliant tactician who led the amphibious assault at Inchon in 1950, MacArthur later clashed with Harry S. Truman, who fired him for insubordination. Mark Landler, The Seattle Times, "Trump intrigued with solving threat from North Korea," 11 June 2018 Imagine a wartime scenario in which a Marine Expeditionary Unit has conducted an amphibious assault on enemy territory the Baltic or South China Sea. Kyle Mizokami, Popular Mechanics, "The Marines Want an Ultra-Portable Kamikaze Drone," 26 Apr. 2018 Early on, Reidenberg says, the amphibious mammals that preceded today’s whales spent their time between the shore and shallow water. Brian Switek, Smithsonian, "Today’s Whales Are Huge, But Why Aren’t They Huger?," 27 June 2018 American amphibious assault vehicles plunged through crashing Baltic surf. Laura King,, "Poland sees opportunity and peril in NATO summit and Trump-Putin meeting," 9 July 2018 At the private Madison Beach Club, Coll and 50 children staged an amphibious landing, planting an American flag in the wet sand as club members pulled their own kids away. Amy Crawford, Smithsonian, "Racism Kept Connecticut’s Beaches White Up Through the 1970s," 2 July 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'amphibious.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of amphibious

1608, in the meaning defined at sense 1

History and Etymology for amphibious

Greek amphibios, literally, living a double life, from amphi- + bios mode of life — more at quick entry 1

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Statistics for amphibious

Last Updated

27 Sep 2018

Look-up Popularity

Time Traveler for amphibious

The first known use of amphibious was in 1608

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More Definitions for amphibious



English Language Learners Definition of amphibious

: able to live both on land and in water

: able to be used both on land and water

: done by soldiers who are brought to land in special boats : carried out by land and sea forces acting together


am·​phib·​i·​ous | \am-ˈfi-bē-əs \

Kids Definition of amphibious

1 : able to live both on land and in water amphibious animals

2 : meant to be used on both land and water amphibious vehicles

3 : made by land, sea, and air forces acting together amphibious attack

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More from Merriam-Webster on amphibious

Spanish Central: Translation of amphibious

Nglish: Translation of amphibious for Spanish Speakers

Britannica English: Translation of amphibious for Arabic Speakers

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