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cognomen

[ kog-noh-muhn ]
/ kɒgˈnoʊ mən /
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noun, plural cog·no·mens, cog·nom·i·na [kog-nom-uh-nuh]. /kɒgˈnɒm ə nə/.

a surname.
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).

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Origin of cognomen

1800–10; <Latin, equivalent to co-co- + nōmen name, with -g- on model of nōscī: cognōscī;see cognition

OTHER WORDS FROM cognomen

cog·nom·i·nal [kog-nom-uh-nuhl, -noh-muh-], /kɒgˈnɒm ə nəl, -ˈnoʊ mə-/, adjectivecog·nom·i·nal·ly, adverb
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

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British Dictionary definitions for cognomen

cognomen
/ (kɒɡˈnəʊmɛn) /

noun plural -nomens or -nomina (-ˈnɒmɪnə, -ˈnəʊ-)

(originally) an ancient Roman's third name or nickname, which later became his family nameSee also agnomen, nomen, praenomen

Derived forms of cognomen

cognominal (kɒɡˈnɒmɪnəl, -ˈnəʊ-), adjectivecognominally, adverb

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 Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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