PRAENOMEN
praenomen
(noun) the first name of a citizen of ancient Rome
Source: WordNet® 3.1
Etymology
Noun
praenomen (plural praenomens or praenomina)
(historical) An ancient Roman first name.
(historical) The throne name of a pharaoh, the fourth of the five names of the royal titulary, traditionally encircled by a cartouche and preceded by the title nswt-bjtj.
(zoology) The genus name put before the species name.
Source: Wiktionary
Præ*no"men, n.; pl. Prænomina. Etym: [L., fr. prae before + nomen
name.] (Rom. Antiq.)
Definition: The first name of a person, by which individuals of the same
family were distinguished, answering to our Christian name, as Caius,
Lucius, Marcus, etc.
Source: Webster’s Unabridged Dictionary 1913 Edition