equal sign

noun

: a sign = indicating mathematical or logical equivalence

called also equality sign, equals sign

Examples of equal sign in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
The second difference is the equal sign instead of less-than-or-equal. Rhett Allain, Wired News, 10 Mar. 2026 On the far left, the three purple squares must not equal one another (hence the equal sign crossed out). Erik Kain, Forbes.com, 1 Jan. 2026 In its simplest forms, two parallel horizontal lines of equal length (like an equal sign) are placed between two lines that are nearly vertical but converge slightly near the top. Phil Plait, Scientific American, 18 Oct. 2024 An equal sign between two squares means the two must be the same, and an X between them requires the symbols to be opposites. Jordan Novet, CNBC, 8 Oct. 2024 For obligatory purchases like gas and groceries, add an equal sign. cleveland, 30 Apr. 2022

Word History

First Known Use

1854, in the meaning defined above

Time Traveler
The first known use of equal sign was in 1854

Cite this Entry

“Equal sign.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/equal%20sign. Accessed 31 Jul. 2026.

Kids Definition

equal sign

noun
: a sign = meaning mathematical or logical equality

called also equality sign, equals sign

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