I. (ˈ) ̷ ̷| ̷ ̷ēən adjective
Etymology: Greek amphibi os + English -an
1. : amphibious
2.
[New Latin Amphibia + English -an ]
: of, relating to, or belonging to the class Amphibia
3.
[ amphibian (II) (vehicle)]
: of or relating to an amphibian (sense 3)
II. noun
( -s )
1.
a. : an animal or plant accustomed or adapted to life both on land and in the water (as certain snakes)
b. : any animal of the class Amphibia (as a frog or newt)
2. : an airplane designed to take off from and land on either land or water
an amphibian … is perhaps the most difficult of all airplane types to build and design — T.A.Dickinson
3. : a flat-bottomed vehicle that moves on tracks having finlike extensions by means of which it is propelled on land or water and that is typically used for landing assault troops