# Latin translation, please, anyone?

**URL:** <https://boards.straightdope.com/t/latin-translation-please-anyone/533084>\
**Category:** Factual Questions\
**Created:** [March 19, 2010, 11:41pm UTC](https://boards.straightdope.com/t/latin-translation-please-anyone/533084 "2010-03-19T23:41:33Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Libre](https://avatars.discourse-cdn.com/v4/letter/l/85e7bf/32.png) [@Libre](https://boards.straightdope.com/u/Libre)\
**Post date:** [March 19, 2010, 11:41pm UTC](https://boards.straightdope.com/t/latin-translation-please-anyone/533084/1 "2010-03-19T23:41:33Z")

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“Quod erat demonstrandum”: “that which was to be demonstrated”

Does anyone know the Latin for “that which will be demonstrated”?

I am grateful for your consideration in this.

~Libre

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**Author:** ![Quartz](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/quartz/32/267_2.png) [@Quartz](https://boards.straightdope.com/u/Quartz)\
**Post date:** [March 20, 2010, 12:39am UTC](https://boards.straightdope.com/t/latin-translation-please-anyone/533084/2 "2010-03-20T00:39:50Z")

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Quod erit demonstrandum.

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**Author:** ![Libre](https://avatars.discourse-cdn.com/v4/letter/l/85e7bf/32.png) [@Libre](https://boards.straightdope.com/u/Libre)\
**Post date:** [March 20, 2010, 1:04am UTC](https://boards.straightdope.com/t/latin-translation-please-anyone/533084/3 "2010-03-20T01:04:33Z")

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One letter ~ I love it!! Thanks so much, Quartz.

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**Author:** ![Polycarp](https://avatars.discourse-cdn.com/v4/letter/p/82dd89/32.png) [@Polycarp](https://boards.straightdope.com/u/Polycarp)\
**Post date:** [March 20, 2010, 1:12am UTC](https://boards.straightdope.com/t/latin-translation-please-anyone/533084/4 "2010-03-20T01:12:04Z")

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> [@Quartz](#):
>
> Quod erit demonstrandum.

Technically “demonstrandum” means “that which is properly demonstrated” – the gerundive being one of propriety, appropriateness. So it could either be “Quod erit demonstrandum”, with the implication that the demonstration-to-come is proper and appropriate, or “…demonstratum”, which simply means “that which will be demonstrated”, with no implication of appropriateness or propriety. The first might be right to introduce a proof in response to someone’s expectations, the latter if someone is merely announcing what he intends to prove on his own volition.