[ ag-noh-muh n ]
/ ægˈnoʊ mən /

noun, plural ag·nom·i·na [ag-nom-uh-nuh] /ægˈnɒm ə nə/.

an additional, fourth name given to a person by the ancient Romans in allusion to some achievement or other circumstance, as “Africanus” in “Publius Cornelius Scipio Africanus.”Compare cognomen(def 3).
a nickname.

Origin of agnomen

1745–55; < Late Latin, equivalent to ad- ad- + nōmen name, with alteration to ag- through influence of agnōscere; see agnize


ag·nom·i·nal [ag-nom-uh-nl] /ægˈnɒm ə nl/, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for agnomen

British Dictionary definitions for agnomen

/ (æɡˈnəʊmɛn) /

noun plural -nomina (-ˈnɒmɪnə)

the fourth name or second cognomen occasionally acquired by an ancient RomanSee also cognomen, nomen, praenomen
another word for nickname

Derived forms of agnomen

agnominal (æɡˈnɒmɪnəl), adjective

Word Origin for agnomen

C18: from Late Latin, from ad- in addition to + nōmen name
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