English Explanatory Dictionary

quod erat demonstrandum

English dictionary entry

Meanings

phrase
  1. which was to be proved; which was to be demonstrated.

Word forms

quod erat demonstrandum quae erant demonstranda

Etymology

Borrowed from Latin quod erat dēmōnstrandum (“that which was to be proved”), calqued from Ancient Greek ὅπερ ἔδει δεῖξαι (hóper édei deîxai, “precisely what was required to be proved”).

Derived words

Q.E.D.
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