quod erat demonstrandum

Meaning

Phrase

  • (something) which was to be proved; which was to be demonstrated.

Origin

  • Borrowed from Latin quod erat dēmōnstrandum ("that which was to be proved"), calqued from Ancient Greek ὅπερ ἔδει δεῖξαι ("precisely what was required to be proved").

Modern English dictionary

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