functio

Latin

Etymology

Action noun of the verb fungor (“I perform, execute”).
Derived from root fug- ("perform", "execute") (from Proto-Indo-European *bʰewg- (“to enjoy”)) with nasal infix (-n-) irregularly borrowed from present tense forms (fung-) + -tiō (“nominal derivational suffix”).

Pronunciation

• (Classical) IPA^(key): /ˈfuːnk.ti.oː/, [ˈfuːŋkt̪ioː]
• (modern Italianate Ecclesiastical) IPA^(key): /ˈfunk.t͡si.o/, [ˈfuŋkt̪͡s̪io]

Noun

fūnctiō f (genitive fūnctiōnis); third declension

1. performance, execution (of a task)
2. (mathematics) function

Declension

Third-declension noun.

Case	Singular	Plural
Nominative	fūnctiō	fūnctiōnēs
Genitive	fūnctiōnis	fūnctiōnum
Dative	fūnctiōnī	fūnctiōnibus
Accusative	fūnctiōnem	fūnctiōnēs
Ablative	fūnctiōne	fūnctiōnibus
Vocative	fūnctiō	fūnctiōnēs

Descendants

• Catalan: funció
• → Czech: funkce
• → Danish: funktion
• → Dutch: functie (see there for further descendants)
• → English: function
• → Esperanto: funkcio
• → Estonian: funktsioon
• → Finnish: funktio
• French: fonction
• → German: Funktion
• Italian: funzione
• → Latvian: funkcija
• → Lithuanian: funkcija
• → Norwegian: funksjon
• Occitan: foncion
• → Polish: funkcja
• Portuguese: função
• Romanian: funcție, funcțiune
• → Russian: фу́нкция (fúnkcija)
• → Serbo-Croatian: fùnkcija (фу̀нкција)
• Sicilian: funziuni
• Spanish: función, funcción
• → Swedish: funktion

References

• “functio”, in Charlton T. Lewis and Charles Short (1879) A Latin Dictionary, Oxford: Clarendon Press
• “functio”, in Charlton T. Lewis (1891) An Elementary Latin Dictionary, New York: Harper & Brothers
• functio in Charles du Fresne du Cange’s Glossarium Mediæ et Infimæ Latinitatis (augmented edition with additions by D. P. Carpenterius, Adelungius and others, edited by Léopold Favre, 1883–1887)
• functio in Gaffiot, Félix (1934) Dictionnaire illustré latin-français, Hachette.