A class of vertebrate animals characterized by a moist, glandular skin, gills at some stage of development, and no amnion during the embryonic stage.
(Source: MGH)
cold-blooded vertebrate typically living on land but breeding in water; aquatic larvae undergo metamorphosis into adult form
designed to take off and land on water
a flat-bottomed motor vehicle that can travel on land or water
relating to or characteristic of animals of the class Amphibia
an airplane designed to take off and land on water
