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[thee-er-uh m, theer-uh m] /ˈθi ər əm, ˈθɪər əm/
Mathematics. a theoretical proposition, statement, or formula embodying something to be proved from other propositions or formulas.
a rule or law, especially one expressed by an equation or formula.
Logic. a proposition that can be deduced from the premises or assumptions of a system.
an idea, belief, method, or statement generally accepted as true or worthwhile without proof.
1545-55; < Late Latin theōrēma < Greek theṓrēma spectacle, hence, subject for contemplation, thesis (to be proved), equivalent to theōrē-, variant stem of theōreîn to view + -ma noun suffix
Related forms
[thee-er-uh-mat-ik, theer-uh-] /ˌθi ər əˈmæt ɪk, ˌθɪər ə-/ (Show IPA),
theorematically, adverb Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for theorem
  • As for the last sentence, a statement for which there is no known proof is not a theorem or even a proto-theorem.
  • More complicated versions of the theorem are easier to prove.
  • So there's no lesson to be learned here, no theorem that would prevent future mishaps.
  • It's a useful geometry theorem reference app for high school students and math lovers alike.
  • Hundreds of readers sent me copies of the map colored with only four colors, thus upholding the four-color theorem.
  • According to her famous theorem, every symmetry is equivalent to a conservation law.
  • In any event, their job is to prove whatever theorem the audience tosses their way.
  • At times, one feels presented with an overwhelming theorem.
  • The four-color theorem in math is a particularly egregious case.
  • Quantum mechanics forbids you from making a perfect copy of a quantum state-a principle known as the no-cloning theorem.
British Dictionary definitions for theorem


(maths, logic) a statement or formula that can be deduced from the axioms of a formal system by means of its rules of inference
Derived Forms
theorematic (ˌθɪərəˈmætɪk), theoremic (ˌθɪəˈrɛmɪk) adjective
theorematically, adverb
Word Origin
C16: from Late Latin theōrēma, from Greek: something to be viewed, from theōrein to view
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for theorem

1550s, from Middle French théorème, from Late Latin theorema, from Greek theorema "spectacle, speculation," in Euclid "proposition to be proved," from theorein "to consider" (see theory).

Online Etymology Dictionary, © 2010 Douglas Harper
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theorem in Medicine

theorem the·o·rem (thē'ər-əm, thēr'əm)

  1. An idea that is demonstrably true or is assumed to be so.

  2. A mathematical proposition that has been or is to be proved on the basis of explicit assumptions.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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theorem in Science
  (thē'ər-əm, thîr'əm)   
A mathematical statement whose truth can be proved on the basis of a given set of axioms or assumptions.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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theorem in Culture
theorem [(thee-uh-ruhm, theer-uhm)]

A statement in mathematics that is not a basic assumption, such as an axiom, but is deduced (see deduction) from basic assumptions.

The American Heritage® New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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