QUOD ERAT DEMONSTRANDUM


Meaning of QUOD ERAT DEMONSTRANDUM in English

[ kwɒd ˌɛrat dɛmən'strandʊm ]

used, especially at the conclusion of a formal proof, to convey that something demonstrates the truth of one's claim.

Origin

L., lit. 'which was to be demonstrated'.

Concise Oxford English vocab.      Сжатый оксфордский словарь английского языка.