micron

noun

mi·​cron ˈmī-ˌkrän How to pronounce micron (audio)

Examples of micron in a Sentence

Recent Examples on the Web This fan, heater, and air purifier has a powerful filtration system that detects pollutants in the air and captures 99.97% of particles as small as 0.3 microns. Megan Boettcher, Better Homes & Gardens, 2 Feb. 2024 Each ridge is only a few microns tall, or a few hundredths of the thickness of human hair. Partha Banerjee, Discover Magazine, 23 Jan. 2024 For particulate matter, the greatest increase was seen for PM2.5 particles, which are less than 2.5 microns in diameter. Kaitlin Sullivan, NBC News, 27 Sep. 2023 The three-stage filtration system catches particles up to 0.3 microns in size and has a true HEPA filter. Kelsey Kunik, Parents, 15 Feb. 2024 There’s also a HEPA filtration system for capturing particles as small as 0.1 microns. Paul Lamkin, Forbes, 26 Feb. 2024 Officials advised vulnerable populations to drink bottled water, boil water for one minute before drinking, and to filter tap water with a filter labeled to ANSI/NSF 53 or 58 standards or a filter designed to remove objects 1 micron or larger. Stephen Sorace, Fox News, 28 Sep. 2023 Particulate matter that's less than 2.5 microns in diameter, also called PM2.5, is particularly concerning because these tiny flecks of pollution can get deep into your lungs, causing a range of health problems. Aimee Picchi, CBS News, 12 Feb. 2024 Regulations require the water to go through filters that remove particles larger than one micron— .00004 inches —in size. Aliza Chasan, CBS News, 8 Jan. 2024

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'micron.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

Etymology

New Latin, from Greek mikron, neuter of mikros small — more at micr-

First Known Use

1879, in the meaning defined above

Time Traveler
The first known use of micron was in 1879

Dictionary Entries Near micron

Cite this Entry

“Micron.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/micron. Accessed 18 Apr. 2024.

Kids Definition

micron

noun
mi·​cron ˈmī-ˌkrän How to pronounce micron (audio)

Medical Definition

micron

noun
mi·​cron ˈmī-ˌkrän How to pronounce micron (audio)
: a unit of length equal to one millionth of a meter

called also micrometer, mu

More from Merriam-Webster on micron

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