ultrafine

adjective

ul·​tra·​fine ˌəl-trə-ˈfīn How to pronounce ultrafine (audio)
Synonyms of ultrafinenext
: fine to an extreme degree: such as
a
: extremely small, thin, or precise
ultrafine dust particles
an ultrafine needle
Color "curves," meanwhile, allow ultrafine adjustments and targeting of color and brightness ranges …—Alexander Breindel
b
: of extremely high quality
ultrafine wines

Examples of ultrafine 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.
This ultrafine texture allows the dough to stretch easily without tearing and produces a soft, tender crumb with just enough chew. — Emily Teel, Better Homes & Gardens, 7 Apr. 2026 Clinique has one liquid eyeliner on the market known for its ultrafine point for precision application. — Bestreviews, Mercury News, 24 Mar. 2026 For the softest tees, look for fabrics that are either superfine or ultrafine—anything 17 µm or higher—like Unbound's T-shirts. — Scott Gilbertson, Wired News, 24 Nov. 2025 The aerosol generated by vaping devices also contains ultrafine particles that can be inhaled deep into the lungs and cause chronic inflammation. — Katia Hetter, CNN Money, 28 May 2026 See All Example Sentences for ultrafine

Word History

First Known Use

1853, in the meaning defined above

Time Traveler
The first known use of ultrafine was in 1853

Rhymes for ultrafine

See All Rhymes for ultrafine

Browse Nearby Words

ultrafiltration
ultrafine
ultragaseous
See all Nearby Words

Cite this Entry

“Ultrafine.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ultrafine. Accessed 7 Jul. 2026.

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