nomenclator

n. [ L., fr. nomen name + calare to call. See Name, and Calendar. ] 1. One who calls persons or things by their names. [ 1913 Webster ]

☞ In Rome, candidates for office were attended each by a nomenclator, who informed the candidate of the names of the persons whom they met and whose votes it was desirable to solicit. [ 1913 Webster ]

2. One who gives names to things, or who settles and adjusts the nomenclature of any art or science; also, a list or vocabulary of technical names. [ 1913 Webster ]