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[trahy-uhm-ver] /traɪˈʌm vər/
noun, plural triumvirs, triumviri
[trahy-uhm-vuh-rahy] /traɪˈʌm vəˌraɪ/ (Show IPA)
Roman History. one of three officers or magistrates mutually exercising the same public function.
one of three persons associated in any office or position of authority.
Origin of triumvir
1570-80; < Latin: literally, one man of three, back formation from trium virōrum of three men
Related forms
triumviral, adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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British Dictionary definitions for triumvir


noun (pl) -virs, -viri (-vɪˌriː)
(esp in ancient Rome) a member of a triumvirate
Derived Forms
triumviral, adjective
Word Origin
C16: from Latin: one of three administrators, from triumvirōrum of three men, from trēs three + vir man
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Word Origin and History for triumvir

"one of three men in the same office or of the same authority," 1570s, from Latin triumvir, from Old Latin phrase trium virum, genitive plural of tres viri "three men," from tres "three" (see three) + viri, plural of vir "man" (see virile).

Online Etymology Dictionary, © 2010 Douglas Harper
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