ultrafine

adjective

ul·​tra·​fine ˌəl-trə-ˈfīn How to pronounce ultrafine (audio)
: 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.
For those who don’t know, PM 2.5 consists of ultrafine particles from Industrial pollution, or even woodsmoke, that can get stuck in the lungs and cause respiratory problems. John Werner, Forbes.com, 12 May 2025 In recent years, the trend has been moving in the direction of ultrafine eyebrow pencils that mimic the shadows created by individual eyebrow hairs. Bestreviews, Chicago Tribune, 7 Mar. 2025 This month, at the design fair Paris Déco Off, the brand is unveiling its latest interiors collection, including new textiles like an ultrafine merino wool and a velvet linen. Lindsey Tramuta Roxanne Fequiere Luke Fortney Gisela Williams Megan O’Sullivan, New York Times, 9 Jan. 2025 That’s because a growing body of science shows that fine and ultrafine particles, usually bound to toxic chemicals and heavy metals in wildfire smoke and exhaust, are causing brain injuries in children. Debra Hendrickson, WIRED, 4 Jan. 2025 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

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Cite this Entry

“Ultrafine.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ultrafine. Accessed 28 May. 2025.

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