traI uhm və riht
noun
1. a group of three persons, esp. in a joint ruling or administering capacity in ancient Rome.
The triumvirate of Mark Antony, Octavian, and Lepidus ruled Rome between 43 and 33 B.C.
“Bayer sets up triumvirate of managers to run slimmed-down operation” (http://www.fiercepharma.com/story/bayer-sets-triumverate-managers-run-slimmed-down-operation/2015-09-21)
2. this form of government or administration.
Rome was ruled by triumvirate from 43 to 33 B.C.