What is Focus?
{{Wiktionary}} '''Focus''' is a Latin word for [[hearth]]. In English it means many things. * [[Focus (geometry)]], one of the two points around which a [[conic section]] is built * [[Focus (optics)]], the bringing together of light rays by a lens * [[Ford Focus]], a car * The [[hypocenter]] of an earthquake * The place where a [[nuclear explosion]] goes off {{disambig}}