theorem
noun
the·o·rem
ˈthē-ə-rəm 
ˈthir-əm
1
: a formula, proposition, or statement in mathematics or logic deduced or to be deduced from other formulas or propositions
2
: an idea accepted or proposed as a demonstrable truth often as a part of a general theory : proposition
the theorem that the best defense is offense
3
: stencil
4
: a painting produced especially on velvet by the use of stencils for each color
Examples of theorem in a Sentence
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Cosmologists and mathematical physicists often seek ways to circumvent the theorem, looking to quantum gravity (or other non-standard scenarios) to break us out of the requirements that general relativity imposes.
—
Big Think, 24 Oct. 2025
Its shadow will at most stick out just a tiny bit past the first shadow, so the global theorem will only rule out a tiny box.
—Erica Klarreich, Quanta Magazine, 24 Oct. 2025
In fact, the turbines were able to reach an efficiency of 53%, which is just shy of Betz's Law, a theorem that says no wind turbine would be able to convert more than about 59.3% of wind energy into power with the turning of rotor blades.
—New Atlas, 17 Oct. 2025
This is a direct consequence of no-go theorems like no-cloning, no-deleting, no-hiding and uncertainty—any attempt to eavesdrop alters the quantum signal, alerting the sender and receiver.
—Pravir Malik, Forbes.com, 19 Sep. 2025
See All Example Sentences for theorem
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Big Think, 24 Oct. 2025
Its shadow will at most stick out just a tiny bit past the first shadow, so the global theorem will only rule out a tiny box.
—Erica Klarreich, Quanta Magazine, 24 Oct. 2025
In fact, the turbines were able to reach an efficiency of 53%, which is just shy of Betz's Law, a theorem that says no wind turbine would be able to convert more than about 59.3% of wind energy into power with the turning of rotor blades.
—New Atlas, 17 Oct. 2025
This is a direct consequence of no-go theorems like no-cloning, no-deleting, no-hiding and uncertainty—any attempt to eavesdrop alters the quantum signal, alerting the sender and receiver.
—Pravir Malik, Forbes.com, 19 Sep. 2025
See All Example Sentences for theorem
Cite this Entry
“Theorem.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/theorem. Accessed 29 Oct. 2025.
Copy CitationKids Definition
theorem
noun
the·o·rem
ˈthē-ə-rəm
ˈthi(-ə)r-əm
1
: a formula, proposition, or statement in mathematics or logic that has been or is to be proved from other formulas or propositions
2
: an idea accepted or proposed as a demonstrable truth
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