refined; refining
Synonyms of refine

transitive verb

1
: to free (something, such as metal, sugar, or oil) from impurities or unwanted material
2
: to free from moral imperfection : elevate
3
: to improve or perfect by pruning or polishing
refine a poetic style
4
: to reduce in vigor or intensity
5
: to free from what is coarse, vulgar, or uncouth

intransitive verb

1
: to become pure or perfected
2
: to make improvement by introducing subtleties or distinctions
refiner noun

Examples of refine in a Sentence

The inventor of the machine spent years refining the design. The class is meant to help you refine your writing style.
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.
With more than 3,500 innings of experience as a major-league outfielder, Harris was on the front end of helping Crow-Armstrong refine his defense. Patrick Mooney, New York Times, 6 Sep. 2026 Yet the real story now is refining constraints that are keeping fuel prices high. Jordan Blum, Fortune, 5 Sep. 2026 Both come from crude oil but they're refined into different products, with different combustion mechanisms and densities. Willa Rubin, NPR, 4 Sep. 2026 The findings were then used to refine the system’s configuration. Atharva Gosavi, Interesting Engineering, 4 Sep. 2026 See All Example Sentences for refine

Word History

First Known Use

1582, in the meaning defined at transitive sense 1

Time Traveler
The first known use of refine was in 1582

Browse Nearby Words

Cite this Entry

“Refine.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/refine. Accessed 7 Sep. 2026.

Kids Definition

refined; refining
1
: to come or bring to a pure state
refine sugar
2
: to make or become improved
3
: to free from what is vulgar
4
: to improve by introducing something that makes a small difference
refined upon the older methods
refiner noun

Medical Definition

refine

transitive verb
refined; refining
: to free (as sugar or oil) from impurities or unwanted material
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