euclidean

adjective

eu·​clid·​e·​an yü-ˈkli-dē-ən How to pronounce euclidean (audio)
variants or less commonly euclidian, often Euclidean
: of, relating to, or based on the geometry of Euclid or a geometry with similar axioms

Examples of euclidean 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.
Facial dynamics were quantified using the Euclidean distance between facial landmarks from the resting expression and subsequent frames, with peak activation defined at the frame showing the largest acceleration of change. Jijo Malayil, Interesting Engineering, 15 Jan. 2026 And one is a little bit more Euclidean and logical and technical and the other theoretic. Sean Woods, Rolling Stone, 5 Aug. 2025 Cameras are boringly euclidean. Carl Zimmer, Discover Magazine, 14 Sep. 2011

Word History

First Known Use

1660, in the meaning defined above

Time Traveler
The first known use of euclidean was in 1660

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Cite this Entry

“Euclidean.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/euclidean. Accessed 6 Feb. 2026.

Kids Definition

Euclidean

adjective
Eu·​clid·​e·​an
yu̇-ˈklid-ē-ən
: of or relating to the geometry of Euclid
Last Updated: - Updated example sentences
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