approximation

noun

ap·​prox·​i·​ma·​tion ə-ˌpräk-sə-ˈmā-shən How to pronounce approximation (audio)
Synonyms of approximationnext
1
: the act or process of drawing together
2
: the quality or state of being close or near
an approximation to the truth
an approximation of justice
3
: something that is approximate
especially : a mathematical quantity that is close in value to but not the same as a desired quantity
approximative
ə-ˈpräk-sə-ˌmā-tiv How to pronounce approximation (audio)
adjective

Examples of approximation in a Sentence

This isn't an exact figure but I think it's a good approximation of what the land is worth. The color of the paint isn't the exact same color as the vase, but it's a close approximation.
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 score is an approximation rather than a medical reading, and one bad night is not a problem. — Hanna Wickes, Sacbee.com, 31 July 2026 What sleep data can actually tell you That score is an approximation, not a medical reading. — Hanna Wickes, Fort Worth Star-Telegram, 31 July 2026 Some of the fatality figures Trump cited appear to be approximations and don't precisely match Defense Department records. — Mary Bruce, ABC News, 22 July 2026 The model may take that shortcut and produce an approximation rather than an accurate computation, without disclosing it. — Binny Gill, Forbes.com, 17 July 2026 See All Example Sentences for approximation

Word History

First Known Use

15th century, in the meaning defined at sense 1

Time Traveler
The first known use of approximation was in the 15th century

Rhymes for approximation

See All Rhymes for approximation

Browse Nearby Words

approximately
approximation
approximation theory
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Cite this Entry

“Approximation.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/approximation. Accessed 6 Aug. 2026.

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Kids Definition

approximation

noun
ap·​prox·​i·​ma·​tion ə-ˌpräk-sə-ˈmā-shən How to pronounce approximation (audio)
1
: a coming near or close (as in value)
2
: something approximate
especially : an estimate or figure that is almost exact
Last Updated: - Updated example sentences
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