QEF

English Q.E.F. Etymology 1 From en la quod erat faciendum what was to have been done, from en grc ὅπερ ἔδει ποιῆσαι. Phrase phr “quod erat faciendum”, “what was to have been done” – used to end a mathematical passage other than a proof. Usage notes Much less used than en QED. Traditionally used to end passages other than proofs, such as geometric constructions – a “how-to”, not a persuasive argument. Related terms en QED Etymology 2 Pronunciation en /kwɛf/ /kjuː iː ˈɛf/ US (can be pronounced as an acronym or as an initialism) Noun en tax en w:passive foreign investment company qualified election fund. See also en PFIC