any cold-blooded vertebrate of the class Amphibia, comprising frogs and toads, newts and salamanders, and caecilians, the larvae being typically aquatic, breathing by gills, and the adults being typically semiterrestrial, breathing by lungs and through the moist, glandular skin.
an amphibious plant.
an airplane designed for taking off from and landing on both land and water.
Also called amtrac. a flat-bottomed, armed, military vehicle, equipped with both tracks and a rudder, that can travel either on land or in water, used chiefly for landing assault troops.
belonging or pertaining to the Amphibia.
- non·am·phib·i·an, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use amphibian in a sentence
So it was meaningful when, in the 2000s, Vredenburg noticed that some of the amphibians he studied in California’s Sierra Nevada mountains survived the chytrid onslaught.When Evolution Is Infectious - Issue 90: Something Green | Moises Velasquez-Manoff | September 30, 2020 | Nautilus
What makes amphibians unique is that they live a “double life.”
By the time the amphibian is an adult, it usually has lungs, not gills.
They shone blue or ultraviolet light on 32 species of amphibians.
The new finding suggests that this biofluorescence is widespread among amphibians.
As the amphibian taxied away without its passenger, Clyde Wendell came down the trail.
The amphibian was taxiing slowly through the water, its nose pointed directly toward the beach.
The amphibian coasted slowly in toward the beach, throttled down its motors and finally came to a halt.
You may be sure April has really come when this little amphibian creeps out of the mud and inflates its throat.A Year in the Fields | John Burroughs
The only other amphibian at Chinaj known to breed in the pools is Bufo valliceps valliceps.Amphibians and Reptiles of the Rainforests of Southern El Peten, Guatemala | William E. Duellman
British Dictionary definitions for amphibian
any cold-blooded vertebrate of the class Amphibia, typically living on land but breeding in water. Their aquatic larvae (tadpoles) undergo metamorphosis into the adult form. The class includes the newts and salamanders, frogs and toads, and caecilians
a type of aircraft able to land and take off from both water and land
any vehicle able to travel on both water and land
another word for amphibious
of, relating to, or belonging to the class Amphibia
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
Scientific definitions for amphibian
A cold-blooded, smooth-skinned vertebrate of the class Amphibia. Amphibians hatch as aquatic larvae with gills and, in most species, then undergo metamorphosis into four-legged terrestrial adults with lungs for breathing air. The eggs of amphibians are fertilized externally and lack an amnion. Amphibians evolved from lobe-finned fish during the late Devonian Period and include frogs, toads, newts, salamanders, and caecilians.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.