/truy fib"ee euhn/ , Mil.
adj.
1. skilled in combat equally on land, sea, and in the air.
2. (of an aircraft) equipped to take off from land, water, snow, or ice.
3. triphibious.
n.
4. a person who is triphibian.
5. a triphibian airplane.
[ 1940-45; TRI- + (AM)PHIBIAN ]