decemvir

noun

de·​cem·​vir di-ˈsem-vər 

: one of a ruling body of 10

specifically : one of a body of 10 magistrates in ancient Rome

decemviral

di-ˈsem-vər-əl 

adjective

decemvirate

di-ˈsem-vər-ət 

noun

Word History

Etymology

Middle English, from Latin, back-formation from decemviri, plural, from decem + viri, plural of vir man — more at virile

First Known Use

15th century, in the meaning defined above