noun, plural cog·no·mens, cog·nom·i·na [kog-nom-uh-nuh] /kɒgˈnɒm ə nə/.
any name, especially a nickname.
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 of cognomen
1800–10;Related formscog·nom·i·nal [kog-nom-uh-nuh l, -noh-muh-] /kɒgˈnɒm ə nəl, -ˈnoʊ mə-/, adjectivecog·nom·i·nal·ly, adverb
equivalent to co- co-
name, with -g-
on model of nōscī: cognōscī;
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for cognomen
Historical Examples of cognomen
British Dictionary definitions for cognomen
noun plural -nomens or -nomina (-ˈnɒmɪnə, -ˈnəʊ-)
Derived Formscognominal (kɒɡˈnɒmɪnəl, -ˈnəʊ-), adjectivecognominally, adverb (originally) an ancient Roman's third name or nickname, which later became his family nameSee also agnomen, nomen, praenomen
Word Origin for cognomen
C19: from Latin: additional name, from co- together + nōmen name; influenced in form by cognōscere to learn
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Word Origin and History for cognomen
1809, from Latin com- "with" (see co-) + (g)nomen "name" (see name (n.)). Third or family name of a Roman citizen (Caius Julius Cæsar).
Online Etymology Dictionary, © 2010 Douglas Harper