triumvir

 
Pronunciation: /trʌɪˈʌmvə, ˈtrʌɪəmvə/

noun (plural triumvirs or triumviri /-rʌɪ/)

  • (in ancient Rome) each of three public officers jointly responsible for overseeing any of the administrative departments.

Derivatives

triumviral

adjective

Origin:

Latin, originally as triumviri (plural), back-formation from trium virorum 'of three men', genitive of tres viri