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Definitions

theorem

[thee-er-uhm, theer-uhm] / ˈθi ər əm, ˈθɪər əm /


Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

A fundamental and powerful concept in probability is Bayes’s theorem, developed by the 18th-century statistician Thomas Bayes.

From The Wall Street Journal • Mar. 29, 2026

AI can’t sit with a student after class and talk through a complex theorem until the child finally gets it.

From MarketWatch • Mar. 9, 2026

The theorem that online anonymity breeds rude behavior was commonplace well before Black’s parents paid Ark Music Factory a few thousand dollars to craft a song and music video for their daughter to record.

From Salon • Feb. 16, 2026

The meaning of life, the laws of general relativity, quantum mechanics, Fermat's last theorem.

From BBC • Oct. 9, 2025

Every theorem in Euclidean geometry can be dualized in projective geometry, setting up a whole set of new theorems in the parallel universe of projective geometry.

From "Zero: The Biography of a Dangerous Idea" by Charles Seife