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finer

American  
[fahy-ner] / ˈfaɪ nər /

adjective

Mathematics.

  1. of or relating to a topology or a topological space whose open sets include all the open sets of a second specified topology on the space.

Etymology

Origin of finer

Special use of comparative of fine 1

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.

This rapid vaporization triggers a phenomenon known as a "micro-explosion," which helps break up the fuel into finer particles.

From Science Daily • Mar. 13, 2026

This appeared to be an effort to draw a finer line between the two.

From The Wall Street Journal • Mar. 7, 2026

The finer details are still unclear but if there are any special rules or conditions attached, that's unlikely to go down well with purists.

From BBC • Feb. 23, 2026

Win or lose, however, I would always ring my assistants, David Kemp and Gerry Francis, and we would discuss the game in finer detail - away from the stadium to give us a different perspective.

From BBC • Feb. 13, 2026

Bar of solid gold couldn’t look any finer.

From "The Young Man and the Sea" by Rodman Philbrick

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

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.