Valentinian I

[ val-uh n-tin-ee-uh n ]
/ ˌvæl ənˈtɪn i ən /
|

noun

a.d. 321?–375, emperor of Western Roman Empire 364–375.

Also Val·en·tin·i·a·nus I [val-uh n-tin-ee-ey-nuh s] /ˌvæl ənˌtɪn iˈeɪ nəs/.

Valentinian II

or Valentinianus II

noun

a.d. c371–392, emperor of the Western Roman Empire 375–392.

Valentinian III

or Valentinianus III

noun

a.d. 419?–455, emperor of the Western Roman Empire 425–455.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

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British Dictionary definitions for valentinian

Valentinian I

Valentinianus I (ˌvælənˌtɪnɪˈeɪnəs)

/ (ˌvælənˈtɪnɪən) /

noun

321–375 ad, emperor of the Western Roman Empire (364–375); appointed his brother Valens to rule the Eastern Empire

Valentinian II

Valentinianus II

noun

371–392 ad, emperor of the Western Roman Empire (375–392), reigning jointly with his half brother Gratian until 383

Valentinian III

Valentinianus III

noun

?419–455 ad, emperor of the Western Roman Empire (425–455). His government lost Africa to the Vandals. With Pope Leo I he issued (444) an edict giving the bishop of Rome supremacy over the provincial churches
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012