QED

Definition : Quod Erat Demonstrandum Latin that which was to be demonstrated
Category : Academic & Science » Mathematics
Country/Region : Worldwide Worldwide
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Initialism

What does QED mean?

Quod Erat Demonstrandum (Q.E.D. or QED) is a Latin phrase that roughly translates to “that which has been demonstrated” or “which was to be proved’”. It is often written at the end of a proof.
Q.E.D. is placed at the end of a mathematical proof to show that what was to be proven has been proven.

Some other translations for QED are:
"what was to be demonstrated"
"thus it has been demonstrated"

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Frequently Asked Questions

What is the full form of QED?

The full form of QED is Quod Erat Demonstrandum

What are the full forms of QED in Academic & Science?

Quod Erat Demonstrandum | Quantum ElectroDynamics

What are the full forms of QED in Worldwide?

Quod Erat Demonstrandum | Quantum ElectroDynamics | Quantum Explosion Dynamo

Translation

Translate Quod Erat Demonstrandum into other languages

Citations Formatting rules vary by edition. Please verify against your required style manual.

Chicago Style

FullForms. "QED." Accessed March 31, 2026. https://fullforms.com/QED.

Harvard Style

FullForms (2026) 'QED', FullForms.com. Available at: https://fullforms.com/QED (Accessed: 31 March 2026).

MLA Style

"QED." FullForms.com, 2026, https://fullforms.com/QED. Accessed 31 Mar. 2026.

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