focus Latin · revision 652
10 Oct 2026, 01:35 by bogdan “New Latin entry from de Vaan, OLD, L&S, TLL, Niermeyer and other Latin dictionaries” current version
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+ ==Pronunciation==
+ * IPA (Classical): [ˈfɔ.kʊs]^(Wiktionary)
+ * IPA (Ecclesiastical): [ˈfɔː.kus]^(Wiktionary)
+
+ ==Forms==
+ '''focus''' ''m'' (genitive focī); second declension^(Wiktionary)
+
+ ==Etymology==
+ The origin is uncertain.^(OLD 2012)^(de Vaan 2008)^(Wiktionary) A connection with [[fax|t=torch]] is impossible in form, according to de Vaan, and an origin in a root of the shape *Dʰ-k(ʷ) would break the rules of PIE roots.^(de Vaan 2008) Hamp explained ''focus'' as a back-formation from [[foculus]], which he derived from a root [[m|ine-pro|*dʰegʷʰ-|t=to burn]]; de Vaan finds this difficult in its chronology.^(de Vaan 2008)^(Wiktionary) The word is also usually compared with [[xcl|բոց|tr=bocʻ|t=flame]].^(Wiktionary)
+
+ Ancient writers derived it from [[foveo|alt=fovēre]] “to warm”: Varro said that anything that keeps a fire is a ''focus'', and Ovid that the hearth is named from flames and because it warms all things.^(Lewis & Short 1879)
+
+ ==Earliest recorded meaning==
+ It is found from Plautus on,^(de Vaan 2008)^(Köbler 2010) meaning the domestic [[m|en|hearth]]: in the ''Aulularia'' offerings are put on the hearth for the household god.^(OLD 2012)
+
+ ==Semantic evolution==
+ The Roman ''focus'' was the hearth in the atrium, centre of the worship of the Lar of the household,^(OLD 2012) and so it stood for home and family, often in the pair ''arae et foci''.^(OLD 2012) It was also the hearth of Vesta, a sacrificial hearth or altar, a funeral pyre, and the fire of a lighthouse or kiln.^(OLD 2012)^(Lewis & Short 1879)
+
+ In Late Latin it came to mean [[m|en|fire]] itself,^(Wiktionary)^(Niermeyer 1976)^(Etymonline) the sense of its Romance descendants such as [[it|fuoco]], [[fr|feu]] and [[es|fuego]].^(Wiktionary) In 1604 Kepler used it in mathematics for a point of convergence, perhaps from the burning point of a lens, and Hobbes brought it into English in the 1650s.^(Etymonline)
+
+ ==Timeline==
+ * c. 250–184 BC – Plautus uses it for the hearth of the household god.^(OLD 2012)^(Köbler 2010)
+ * 234–149 BC – Cato uses it for the hearth on which bread is baked.^(OLD 2012)^(Köbler 2010)
+ * 81–43 BC – Cicero speaks of the public hearth of Vesta.^(OLD 2012)^(Köbler 2010)
+ * 70–19 BC – Vergil uses it for funeral pyres.^(OLD 2012)^(Köbler 2010)
+ * Early Middle Ages – It is used for fire.^(Niermeyer 1976)^(Etymonline)
+ * 1604 – Kepler uses it for a point of convergence.^(Etymonline)
+ * 1650s – Hobbes introduces it into English.^(Etymonline)
+
+ ==Meanings==
+ ===Noun===
+ # A domestic [[m|en|hearth]], [[m|en|fireplace]], centre of the household cult.^(OLD 2012)^(Lewis & Short 1879)
+ # ''(figurative)'' Home; a household, family.^(OLD 2012)
+ # A sacrificial hearth, an [[m|en|altar]].^(OLD 2012)^(Lewis & Short 1879)
+ # A [[m|en|brazier]]; a place where fires are lit, such as a kiln, lighthouse or funeral pyre.^(OLD 2012)^(Lewis & Short 1879)
+ # ''(Late Latin)'' [[m|en|fire]].^(Wiktionary)^(Niermeyer 1976)
+ # ''(Medieval Latin)'' A household, family.^(Niermeyer 1976)
+
+ ==Descendants==
+ * Italian: [[m|it|fuoco]]^(Wiktionary)
+ * Portuguese: [[m|pt|fogo]]^(Wiktionary)
+ * Romanian: [[m|ro|foc]]^(Wiktionary)
+ * Catalan: [[m|ca|foc]]^(Wiktionary)
+ * Occitan: [[m|oc|fuòc]], [[m|oc|fòc]], [[m|oc|fuec]], [[m|oc|hoec]], [[m|oc|huec]]^(Wiktionary)
+ * Galician: [[m|gl|fogo]]^(Wiktionary)
+ * Sardinian: [[m|sc|fogu]], [[m|sc|focu]]^(Wiktionary)
+ * Romansh: [[m|rm|fieu]], [[m|rm|fiug]]^(Wiktionary)
+ * Friulian: [[m|fur|fûc]]^(Wiktionary)
+ * Dalmatian: [[m|dlm|fuc]]^(Wiktionary)
+ * Aromanian: [[m|rup|foc]], [[m|rup|focu]]^(Wiktionary)
+ * Old French: [[m|fro|fu]]^(Wiktionary)
+ ** Middle French: [[m|frm|feu]]^(Wiktionary)
+ *** French: [[m|fr|feu]]^(Wiktionary)
+ * Old Spanish: [[m|osp|fuego]]^(Wiktionary)
+ ** Spanish: [[m|es|fuego]]^(Wiktionary)
+ * English: [[m|en|focus]] ''(borrowed)''^(Wiktionary)
+
+ ==Word family==
+ * [[focācius]]
+ * [[focārius]]
+ * [[foculus]]
+ * [[focāceus]]
+ * [[focācium]]
+ * [[īnfocō]]
+
+ ==Related words==
+ * [[foculāre]]
+ * [[en|focus]]
+ * [[en|fuel]]
+
+ ==References==
+ {{reflist}}