Lewis Short
(verb) : trans-nōmĭno, āvi, 1
* To name over again, change the name of a person or thing to something else (post-Aug.): Septembrem mensem et Octobrem ex appellation ibus suis Germanicum Domitianumque transnominavit,Suet. Dom. 13 fin.; so id. Gram. 18: qui prior et Christum suum in homines annuntiaret et Jesum transnominaret,Tert. adv. Marc. 4, 39 init.
Charlton T. Lewis, Charles Short, A Latin Dictionary