Толковый словарь английского языка Oxford English Reference - amphibious

adj. 1 living both on land and in water. 2 of or relating to or suited for both land and water. 3 Mil. a (of a military operation) involving forces landed from the sea. b (of forces) trained for such operations. 4 having a twofold nature; occupying two positions. Derivatives amphibiously adv.