equal sign


Definition of equal sign

: 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

The most overlooked symbol in any equation is the humble equal sign. Quanta Magazine, "Quantum Questions Inspire New Math," 30 Mar. 2017 The equal sign shows that energy is equivalent to v, which stands for frequency, by a constant factor—a constant known within the equation as h, and as Planck's Constant to a larger community. David Grossman, Popular Mechanics, "Why the World's Measuring Systems Just Changed—and What It Means," 20 May 2019 The Babylonians had already divided the zodiac into 12 equal signs by 1500 BC — boasting similar constellation names to the ones familiar today, such as The Great Twins, The Lion, The Scales — and these were later incorporated into Greek divination. Olivia B. Waxman, Time, "Where Do Zodiac Signs Come From? Here's the True History Behind Your Horoscope," 21 June 2018 Dear Hit Home: Serious problem + his refusal to change + your loss of motivation to keep trying (equal sign) trial separation, at least. Carolyn Hax, idahostatesman, "Falling out of love with alcoholic husband who refuses to change | Idaho Statesman," 5 Apr. 2018 The police had long suspected F.P. was German, or of German extraction, because of his vaguely Teutonic lettering, particularly his G’s, which ended their circular form with a pair of horizontal slashes, like an equal sign. Michael Cannell, Smithsonian, "Unmasking the Mad Bomber," 29 Apr. 2017

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'equal sign.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of equal sign

circa 1909, in the meaning defined above

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Time Traveler for equal sign

The first known use of equal sign was circa 1909

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More Definitions for equal sign

equal sign


English Language Learners Definition of equal sign

: a symbol = used to show that two numbers are equal

More from Merriam-Webster on equal sign

Rhyming Dictionary: Words that rhyme with equal sign

Spanish Central: Translation of equal sign

Comments on equal sign

What made you want to look up equal sign? Please tell us where you read or heard it (including the quote, if possible).


concealment of treason or felony

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