cognomen

Borrowed from Latin cognōmen.

• (US) IPA^(key): /kɒɡˈnoʊ.mən/
• Hyphenation: cog‧no‧men

cognomen (plural cognomens or cognomina)

1. surname
   • 2018 December 23, Evan Davis, Dragons' Den:

     What's in a name? Well, to the Dragons, it would seem rather a lot, as they've tonight committed their cash to personalised products and to the man with the most famous cognomen in confectionery. I'll leave you to look that one up.

2. (historical) the third part of the name of a citizen of ancient Rome
3. a nickname or epithet by which someone is identified; a byname; a moniker or sobriquet

• “cognomen” in Douglas Harper, Online Etymology Dictionary, 2001–2019.

From com- (“together, with”) +‎ nōmen (“name”). The g is from false association with cognōscō (“recognize”).

• (Classical) IPA^(key): /koɡˈnoː.men/, [kɔŋˈnoː.mɛn]

cognōmen n (genitive cognōminis); third declension

1. surname
2. third part of a formal name
3. an additional name derived from some characteristic

Third declension neuter.

• agnōmen
• nōmen

• cognomen in Charlton T. Lewis and Charles Short (1879) A Latin Dictionary, Oxford: Clarendon Press
• cognomen in Charlton T. Lewis (1891) An Elementary Latin Dictionary, New York: Harper & Brothers
• cognomen in Charles du Fresne du Cange’s Glossarium Mediæ et Infimæ Latinitatis (augmented edition, 1883–1887)
• cognomen in Gaffiot, Félix (1934) Dictionnaire Illustré Latin-Français, Hachette
• cognomen in Harry Thurston Peck, editor (1898) Harper's Dictionary of Classical Antiquities, New York: Harper & Brothers
• cognomen in William Smith et al., editor (1890) A Dictionary of Greek and Roman Antiquities, London: William Wayte. G. E. Marindin