Yes, that's right: something triphibious is something which can exist on water, on land, and in the air.
It's usually used of military vehicles:
but, hey, we're triphibious, too, when you come to think about it.
photo by Mark Sebastian
photo by Chris Brown
...until I remembered ducks.
photo by Paula M WolterAh well.
Word To Use Today: triphibious. The tri- bit comes from Latin, and before that from the Greek treis, three. The -phibious part of the word is a bit of a car-crash. It comes from amphibious, of course, which is Greek for double life, where amphi- means on both sides, or at both ends, and bios means life.