ultrafine
adjective
ul·tra·fine
ˌəl-trə-ˈfīn 
: 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
Alexander Breindel
b
: of extremely high quality
ultrafine wines
Examples of ultrafine in a Sentence
Recent Examples on the Web
Researchers at Tufts University recently identified ultrafine particles in Bedford neighborhoods that may be connected to aircraft operations at Hanscom but the health implications are uncertain, the hyperlocal Bedford Citizen reported last week.
—Lance Reynolds, Boston Herald, 20 Apr. 2024
The aerosol can also contain cancer-causing chemicals, heavy metals and ultrafine particles that are damaging when inhaled deeply.
—Maureen Groppe, USA TODAY, 2 Dec. 2024
They're made of ultrafine, long-staple organic cotton, with a weave that's on the heavier side giving them a bit of weight.
—Scott Gilbertson, WIRED, 2 Nov. 2024
There are currently no large-scale monitoring sites in the U.S. dedicated to tracking ultrafine particles in the environment.
—Discover Magazine, 1 Nov. 2024
See all Example Sentences for ultrafine 
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Lance Reynolds, Boston Herald, 20 Apr. 2024
The aerosol can also contain cancer-causing chemicals, heavy metals and ultrafine particles that are damaging when inhaled deeply.
—Maureen Groppe, USA TODAY, 2 Dec. 2024
They're made of ultrafine, long-staple organic cotton, with a weave that's on the heavier side giving them a bit of weight.
—Scott Gilbertson, WIRED, 2 Nov. 2024
There are currently no large-scale monitoring sites in the U.S. dedicated to tracking ultrafine particles in the environment.
—Discover Magazine, 1 Nov. 2024
See all Example Sentences for ultrafine
Dictionary Entries Near ultrafine
Cite this Entry
“Ultrafine.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ultrafine. Accessed 26 Dec. 2024.
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