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ag·no·men | \ ag-ˈnō-mən 
\
\ plural agnomina\ ag-ˈnä-mə-nə \ or agnomens
\ or agnomensDefinition of agnomen
: an additional cognomen given to a person by the ancient Romans (as in honor of some achievement)
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Time Traveler for agnomen
The first known use of agnomen was in 1654
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