Pronunciation
Forms
calefaciō (present infinitive calefacere, perfect active calefēcī, supine calefactum); third (-iō variant) conjugation, suppletive[1] Also contracted calfaciō and calficiō, and Quintilian discusses the difference between calefaciō and calfaciō.[2] The passive is cal(e)fīō.[2][3]
Etymology
It is a compound of caleō “to be warm” and faciō “to make”.[2][1] De Vaan traces ⟨caleō⟩ to Proto-Italic *kalē-, a stative verb from Proto-Indo-European *ḱlh₁-eh₁- (“to be hot”).[4]
Earliest recorded meaning
The OLD's earliest citations are from Plautus, of heating.[2] Köbler dates Plautus c. 250–184 BC.[5]
Semantic evolution
It meant to make hot, heat, warm, as in Plautus, Lucretius and Cicero; of pungent substances, to produce a sensation of heat in the body, as in Celsus; and figuratively to stir to activity, rouse, as in Cicero's letters, calefac hominem “warm the man up”.[2]
In Ecclesiastical Latin it meant to warm.[6]
Timeline
- c. 250–184 BC – Plautus uses it.[2][5]
- 81–43 BC – Cicero uses it of rousing.[2][5]
- 14–37 AD – Celsus uses it in medicine.[2][5]
Meanings
Verb
- To make hot, heat, warm.[2]
- (of pungent substances) To produce a sensation of heat.[2]
- To stir to activity, rouse.[2]
Word family
- calefactiō
- calefactō
- calefactōrius
- calefactus
- concalefaciō
- excalefaciō
- incalfaciō
- percalefaciō
- praecalfactus
- recalfaciō
- excalfaciō
Related words
References
- ^ a b c d Wiktionary, the free dictionary, https://en.wiktionary.org
- ^ a b c d e f g h i j k Glare, P. G. W., ed. (2012), Oxford Latin Dictionary, 2nd ed., Oxford: Oxford University Press
- ^ Lewis, Charlton T.; Short, Charles (1879), A Latin Dictionary, Oxford: Clarendon Press
- ^ de Vaan, Michiel (2008), Etymological Dictionary of Latin and the other Italic Languages, Leiden Indo-European Etymological Dictionary Series 7, Leiden; Boston: Brill
- ^ a b c d Köbler, Gerhard (2010), Lateinisches Abkunfts- und Wirkungswörterbuch für Altertum und Mittelalter, online ed., koeblergerhard.de
- ^ Stelten, Leo F. (1995), Dictionary of Ecclesiastical Latin, Peabody, Mass.: Hendrickson
Derived terms
Cite this entry
“Calefacio.” Etymologically, 17 Oct. 2026, etymologically.com/la/calefacio. Accessed 17 Oct. 2026.
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