(ˈ)ag|nōmən noun
( plural ag·nom·i·na -nämənə, -nōm- ; or agnomens )
Etymology: Latin, irregular (influence of agnoscere to acknowledge, from ad- + noscere to know) from ad- + nomen name — more at name
: an additional name or epithet ; specifically : an additional cognomen given to a person by the ancient Romans (as in honor of some achievement) — compare nomen , praenomen