Q.E.D.

1760, abbreviation of Latin quod erat demonstrandum "which was to be demonstrated."

also from 1760

adapted from books.google.com/ngrams/. Ngrams are probably unreliable.

‘cite’

Page URL:

https://www.etymonline.com/word/Q.E.D.

HTML Link:

<a href="https://www.etymonline.com/word/Q.E.D.">Etymology of Q.E.D. by etymonline</a>

APA style:

Harper, D. (n.d.). Etymology of Q.E.D.. Online Etymology Dictionary. Retrieved $(datetime), from https://www.etymonline.com/word/Q.E.D.

Chicago style:

Harper Douglas, “Etymology of Q.E.D.,” Online Etymology Dictionary, accessed $(datetime), https://www.etymonline.com/word/Q.E.D..

MLA style:

Harper, Douglas. “Etymology of Q.E.D..” Online Etymology Dictionary, https://www.etymonline.com/word/Q.E.D.. Accessed $(datetimeMla).

IEEE style:

D. Harper. “Etymology of Q.E.D..” Online Etymology Dictionary. https://www.etymonline.com/word/Q.E.D. (accessed $(datetime)).

updated on September 28, 2017

pyx

pâté

Q and A

q.e.

Q.E.D.

q.t.

q.v.

Qatar

qu-