equation

noun

equa·​tion i-ˈkwā-zhən How to pronounce equation (audio)
 also  -shən
1
a
: the act or process of equating
b(1)
: an element affecting a process : factor
(2)
: a complex of variable factors
c
: a state of being equated
specifically : a state of close association or identification
bring governmental enterprises and payment for them into immediate equation R. G. Tugwell
2
a
: a usually formal statement of the equality or equivalence of mathematical or logical expressions
b
: an expression representing a chemical reaction quantitatively by means of chemical symbols

Examples of equation in a Sentence

the equation of material wealth with happiness
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.
Baseball’s injury epidemic is part of the equation. Cody Stavenhagen, New York Times, 29 May 2025 And activists on both sides of the equation are warning about an impending constitutional crisis, although their rationales are very different. Rebecca Morin, USA Today, 28 May 2025 An excerpt from our conversation is later in this newsletter. ARTIFICIAL INTELLIGENCE Ever since companies began to use enterprise AI, advocates have continually said that the technology wasn’t out to replace jobs, and that humans would always be a necessary part of the equation. Megan Poinski, Forbes.com, 28 May 2025 Anticipating every possible situation, which also involves balancing cargo weight and risk, is part of the equation. Eileen Falkenberg-Hull, MSNBC Newsweek, 27 May 2025 See All Example Sentences for equation

Word History

First Known Use

14th century, in the meaning defined at sense 1a

Time Traveler
The first known use of equation was in the 14th century

Browse Nearby Words

Cite this Entry

“Equation.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/equation. Accessed 3 Jun. 2025.

Kids Definition

equation

noun
equa·​tion i-ˈkwā-zhən How to pronounce equation (audio)
 also  -shən
1
: the act or process of equating : the state of being equated
2
a
: a statement of the equality of two mathematical expressions
b
: an expression involving chemical symbols for a chemical reaction

Medical Definition

equation

noun
equa·​tion
i-ˈkwā-zhən also -shən
: an expression representing a chemical reaction quantitatively by means of chemical symbols
Last Updated: - Updated example sentences
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