duumvir

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du·um·vir

D0438700 (do͞o-ŭm′vər, dyo͞o-)n. A member of a duumvirate.
[Latin : duum, genitive pl. of duo, two; see dwo- in Indo-European roots + vir, man; see wī-ro- in Indo-European roots.]

duumvir

(djuːˈʌmvə) n, pl -virs or -viri (-vɪˌriː) 1. (Historical Terms) Roman history one of two coequal magistrates or officers2. (Government, Politics & Diplomacy) either of two men who exercise a joint authority[C16: from Latin, from duo two + vir man]

du•um•vir

(duˈʌm vər, dyu-)

n., pl. -virs, -vi•ri (-vəˌraɪ) one of two officers or magistrates of ancient Rome jointly exercising the same public function. [1590–1600; < Latin, back formation from duumvirōrum, genitive pl. of duovirī two men =duo- duo- + virī, pl. of vir man]