/peuh sif"ik/ , adj.
1. tending to make or preserve peace; conciliatory: pacific overtures.
2. not warlike; peaceable; mild: a pacific disposition.
3. at peace; peaceful: a pacific era in history.
4. calm; tranquil: The Wabash is a pacific river.
5. ( cap. ) of or pertaining to the Pacific Ocean.
6. ( cap. ) of or pertaining to the region bordering on the Pacific Ocean: the Pacific states.
n. (cap.)
7. See Pacific Ocean .
8. a steam locomotive having a four-wheeled front truck, six driving wheels, and a two-wheeled rear truck. See table under Whyte classification
[ 1540-50; pacificus lit., peacemaking, equiv. to paci- (comb. form of pax ) PEACE + -ficus -FIC ]