QEF

English

Etymology 1

From Latin quod erat faciendum (“what was to have been done”), from Ancient Greek ὅπερ ἔδει ποιῆσαι (hóper édei poiêsai).

Phrase

QEF

1. “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 QED. Traditionally used to end passages other than proofs, such as geometric constructions – a “how-to”, not a persuasive argument.

Related terms

• QED

Etymology 2

Pronunciation

• (US) IPA^(key): /kwɛf/, /kjuː iː ˈɛf/ (can be pronounced as an acronym or as an initialism)

Noun

QEF (plural QEFs)

1. (taxation) Acronym of qualified election fund

See also

• PFIC