micron

noun

mi·​cron ˈmī-ˌkrän 

: micrometer entry 2

Examples of micron in a Sentence

Recent Examples on the Web

The fine mesh filter takes care of larger particles, passing them through to the True HEPA to capture pollen, dust, smoke, and pet dander as small as 0.3 microns. —Cheryl Fenton, Parents, 19 July 2025

The green laser shows you where dust might be hiding on your floors, and the LCD screen will tell you about the particle sizes down to the micron. —Nena Farrell, Wired News, 10 July 2025

Wildfire smoke falls under the category of pollutants known as PM2.5, which describes particles in the air smaller than 2.5 microns. —Andrew Montequin, jsonline.com, 2 Aug. 2025

Wildfire smoke is one of several sources of a type of air pollution called PM, fine particulate matter in which the particles are no larger than 2.5 microns wide. —Meghan Bartels, Scientific American, 1 Aug. 2025

Word History

Etymology

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

First Known Use

1879, in the meaning defined above

Rhymes for micron

• anton
• argon
• axon
• baronne
• baryon
• baton
• boron
• buisson
• bygone
• capon
• cardon
• chiffon

Kids Definition

micron

noun

mi·​cron ˈmī-ˌkrän 

: micrometer entry 2

Medical Definition

micron

noun

mi·​cron ˈmī-ˌkrän 

: a unit of length equal to one millionth of a meter

called also micrometer, mu