cognomen

[kog-noh-muh n] /kɒgˈnoʊ mən/
noun, plural cognomens, cognomina
[kog-nom-uh-nuh] /kɒgˈnɒm ə nə/ (Show IPA)
1.
a surname.
2.
any name, especially a nickname.
3.
the third and commonly the last name of a citizen of ancient Rome, indicating the person's house or family, as “Caesar” in “Gaius Julius Caesar.”.
Compare agnomen (def 1).
Origin
1800-10; < Latin, equivalent to co- co- + nōmen name, with -g- on model of nōscī: cognōscī; see cognition
Related forms
cognominal
[kog-nom-uh-nuh l, -noh-muh-] /kɒgˈnɒm ə nəl, -ˈnoʊ mə-/ (Show IPA), adjective
cognominally, adverb
Examples from the web for cognomen
  • Roman cognomen, does not necessarily imply that it was given in recollection.
British Dictionary definitions for cognomen

cognomen

/kɒɡˈnəʊmɛn/
noun (pl) -nomens, -nomina (-ˈnɒmɪnə; -ˈnəʊ-)
1.
(originally) an ancient Roman's third name or nickname, which later became his family name See also agnomen, nomen, praenomen
Derived Forms
cognominal (kɒɡˈnɒmɪnəl; -ˈnəʊ-) adjective
cognominally, adverb
Word Origin
C19: from Latin: additional name, from co- together + nōmen name; influenced in form by cognōscere to learn
Word Origin and History for cognomen
n.

1809, from Latin com- "with" (see co-) + (g)nomen "name" (see name (n.)). Third or family name of a Roman citizen (Caius Julius Cæsar).