Pronunciation: (trī-um'vur-it, -vu-rāt"), [key]
1. Rom. Hist.the office or magistracy of a triumvir.
2. a government of three officers or magistrates functioning jointly.
3. a coalition of three magistrates or rulers for joint administration.
4. any association of three in office or authority.
5. any group or set of three.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.