q.e.d.

Fetched 2026-10-26 (cache).

Synonyms: q.e.d

Antonyms: q.e.d

Related words from Datamuse; suggestions, not definitions.

Phrase

1. {{senseid|en|mathematics}} {{lb|en|mathematics|dated}} {{initialism of|en|quod erat demonstrandum|t=what was to be proved; what was to be demonstrated}}: {{non-gloss|placed at the end of a [[mathematical]] [[proof]] to [[show#Verb|show]] that the [[theorem]] under [[discussion]] is [[prove]]d.}}
2. {{senseid|en|extended use outside mathematics}} {{lb|en|by extension}} {{non-gloss|Used to [[indicate]] that an [[argument]] or [[proposition]] is proved by the [[existence]] of some [[fact]] or [[scenario]].}}

Noun

1. A certain [[fact]] or [[scenario]] that [[prove]]s an [[argument]] or [[proposition]]; a [[justification]].

Source: Wiktionary · CC BY-SA 4.0 (Wiktionary dump) · cached copy, not a rewrite.