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quod erat demonstrandum

Latin Phrases
Pronunciation

Understanding ARPABET Pronunciation

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The pronunciation guide uses the ARPABET phonetic system—the same system used in speech recognition and text-to-speech applications.

Vowel Examples:
AE1 = cat, bat
EH1 = bed, head
IY1 = see, me
OW1 = go, boat
UW1 = boot, do
Stress Numbers:
0 = no stress (unstressed)
1 = primary stress (loud)
2 = secondary stress (medium)
Example:
AH0 TH IY1 N AH0
= a-THEE-na (Athena)

The stressed syllable (marked with 1) is pronounced louder and clearer than others.

Quick Definition

Meaning “which was to be demonstrated,” it marks conclusion of proof. It signals completed argument.

Detailed Definition
Quod erat demonstrandum, often abbreviated Q.E.D., concludes logical demonstration. In poetry it may be used ironically to close an argument or highlight circular reasoning. The phrase adds scholarly wit and structural finality.
Example
Example in poetry:
A witty epigram might end with quod erat demonstrandum to signal ironic proof; A satirical poem could parody logic by triumphantly declaring quod erat demonstrandum; A philosophical sonnet may structure itself like a proof concluding quod erat demonstrandum; A classroom parody verse might use quod erat demonstrandum after an obvious claim.
Additional Notes
Quod erat demonstrandum, often abbreviated Q.E.D., marks logical conclusion. In poetry, it may be used ironically to signal overconfident reasoning. Students should analyse its structural role in argumentative verse.
Also Known As
Q.E.D. Which was to be proved
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