coarser

American

[kawr-ser, kohr-] / ˈkɔr sər, ˈkoʊr- /

adjective

Mathematics.

of or relating to a topology on a topological space whose open sets are included among the open sets of a second specified topology on the space.

Etymology

Origin of coarser

coarse + -er ⁴

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

coarser

Concentrations of coarser particles, which are also linked to respiratory illness, exceeded Kosovo's daily legal limit on 16 days.

From Barron's ● Aug. 28, 2026

Unlike Maricopa Highway 33, Hudson Ranch Road features coarser asphalt, no guardrails and more passing zones than turnouts.

From Los Angeles Times ● Aug. 13, 2026

The ad itself uses coarser language and has given rise to awkwardness: “That makes the LGBTQ+ community think, ‘Oh, Spencer,’ and Heidi, my wife, is a huge gay icon.”

From The Wall Street Journal ● May 29, 2026

The coarser material on top appeared to result from a subsequent event along the nearby San Andreas fault.

From Science Daily ● May 2, 2026

“Plus, they have coarser, thicker hair than normal dogs, and their hair usually gets stuck on the trees they pass,” Valley said.

From "Witchlings" by Claribel A. Ortega

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Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023