: one who gives names to or invents names for things

: one who gives names to or invents names for things

3 : one who gives names to or invents names for things

: one who announces the names of guests or of persons generally

: one who announces the names of guests or of persons generally

2 archaic : one who announces the names of guests or of persons generally

History and Etymology for nomenclator

borrowed from New Latin nōmenclātor "book containing lists of names or words," going back to Latin nōmenclātor, nōmenculātor "slave tasked with telling his master the names of clients and others encountered publicly," from nōmen "name" + calāre "to announce, proclaim, summon" + -tor, agent suffix — more at name entry 1, low entry 3