Also found in: Wikipedia.
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.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
n, pl -virs or -viri (-vɪˌriː)
1. (Historical Terms) Roman history one of two coequal magistrates or officers
2. (Government, Politics & Diplomacy) either of two men who exercise a joint authority
[C16: from Latin, from duo two + vir man]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
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]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.