submicron
adjective
sub·mi·cron
ˌsəb-ˈmī-ˌkrän 
1
: being less than a micron in a (specified) measurement and especially in diameter
a submicron particle
2
: having or consisting of submicron particles
a submicron metal powder
Examples of submicron in a Sentence
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That device gathered information about sperm movement at the level of submicron resolution, smaller than one-millionth of a meter.
—
Courtney Sexton, Smithsonian Magazine, 31 July 2020
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Courtney Sexton, Smithsonian Magazine, 31 July 2020
Cite this Entry
“Submicron.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/submicron. Accessed 3 Feb. 2026.
Copy CitationMedical Definition
submicron
adjective
sub·mi·cron
-ˈmī-ˌkrän
1
: being less than a micron in a (specified) measurement and especially in diameter
a submicron particle
2
: having or consisting of submicron particles
submicron aerosols
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