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n. pl. cog·no·mens or cog·nom·i·na (-nŏm′ə-nə)
a. A family name; a surname.
b. The third and usually last name of a citizen of ancient Rome, as Caesar in Gaius Julius Caesar.
2. A name, especially a descriptive nickname or epithet acquired through usage over a period of time.

[Latin cognōmen : co-, con-, co- (influenced by cognōscere, to know) + nōmen, name; see nō̆-men- in Indo-European roots.]

cog·nom′i·nal (-nŏm′ə-nəl) adj.


n, pl -nomens or -nomina (-ˈnɒmɪnə; -ˈnəʊ-)
(Historical Terms) (originally) an ancient Roman's third name or nickname, which later became his family name. See also agnomen, nomen, praenomen
[C19: from Latin: additional name, from co- together + nōmen name; influenced in form by cognōscere to learn]
cognominal adj
cogˈnominally adv


(kɒgˈnoʊ mən)

n., pl. -no•mens, -nom•i•na (-ˈnɒm ə nə)
1. any name, esp. a nickname or epithet.
2. 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).
3. a surname.
[1800–10; < Latin, =co- co- + nōmen name]
cog•nom′i•nal (-ˈnɒm ə nəl, -ˈnoʊ mə-) adj.


1. Ancient Rome. the third and usually last name in Roman personal names, as Caesar of Gaius Julius Caesar.
2. a surname or family name.
3. a nickname. — cognominal. adj.
See also: Names
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.cognomen - a familiar name for a person (often a shortened version of a person's given name)cognomen - a familiar name for a person (often a shortened version of a person's given name); "Joe's mother would not use his nickname and always called him Joseph"; "Henry's nickname was Slim"
appellation, appellative, designation, denomination - identifying word or words by which someone or something is called and classified or distinguished from others
2.cognomen - the name used to identify the members of a family (as distinguished from each member's given name)
name - a language unit by which a person or thing is known; "his name really is George Washington"; "those are two names for the same thing"
maiden name - a woman's surname before marriage


The word or words by which one is called and identified:
Slang: handle, moniker.


[kɒgˈnəʊmen] N (frm) (cognomens or cognomina (pl)) (= surname) → apellido m; (= nickname) → apodo m
References in classic literature ?
The cognomen of Crane was not inapplicable to his person.
Under the temporary pressure of pecuniary liabilities, contracted with a view to their immediate liquidation, but remaining unliquidated through a combination of circumstances, I have been under the necessity of assuming a garb from which my natural instincts recoil - I allude to spectacles - and possessing myself of a cognomen, to which I can establish no legitimate pretensions.
Hereafter a very notorious Roman Emperor will institute this worship in Rome, and thence derive a cognomen, Heliogabalus.
Both the name and the idea appealed to Number Thirteen and from that time he adopted Bulan as his rightful cognomen.
started the cognomen, and now it is finding general favor.
The new cognomen to which the warrior aspires must be "Romanus": only after having annihilated the economically disordered Rome can he define himself as the Roman, the last and best of his people.
al-'Awwam, Abu Sa'id, or Abu 'Amr or Abu-l-Qasim; Warsh is his cognomen (laqab) (Ibn Khalaf, Iqnac, Bab asma' al-qurra').
Mogul is hoping to avoid the same fate by attempting to live up to his surname, a cognomen that constantly has prompted questions and comments: "Can you ski the bumps?
It is an uncommon and funnily-pronounced cognomen, and thus often misspelled and confused.
Because he was very short in stature, Chancellor Engelbert Dollfuss was known--not affectionately--as "Millimeter" a cognomen based on "Millimetternich," a not flattering reminder of the former Imperial Chancellor Clemens von Metternich.
Vermeer-Pardoen (Utrecht: Het Spectrum, 1992), 16: "Primum admonuit me Mori cognomen tibi gentile, quod tam ad Moriae accredit, quam es ipse a re alienus; es autem vel omnium suffragiis alienissumus.
Cognomen recently recorded his first win on the Flat and he could now be ready to follow up over hurdles, while in the second division of that race, Muskatsturm is the choice after a recent handicap hurdle win at Ballinrobe.