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triphibious

adjective
tri·​phib·​i·​ous | \ (ˈ)trī¦fibēəs\

Definition of triphibious

1 : employing, involving, or constituted by land, naval, and air forces and often including airborne troops in coordinated attack triphibious operations triphibious forces triphibious strategy triphibious warfare triphibious landing exercises
2 : triphibian sense 1 triphibious marines triphibious airplanes

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History and Etymology for triphibious

tri- + -phibious (as in amphibious)

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