micron

American  

[mahy-kron] / ˈmaɪ krɒn /

Or mikron

noun

microns, plural micra plural

1. Also called micrometer.  the millionth part of a meter. μ, mu

2. Physical Chemistry. a colloidal particle whose diameter is between 0.2 and 10 microns.

3. Physics. a very small unit of pressure, equal to that exerted by a column of mercury 1μ high.

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micron British  

/ ˈmaɪkrɒn /

noun

1. a unit of length equal to 10 ^–6 metre. It is being replaced by the micrometre, the equivalent SI unit

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micron Scientific  

/ mī′krŏn′ /

1. See micrometer

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Other Word Forms

Inflected Forms

noun

• microns
  plural
• micra
  plural

Etymology

Origin of micron

1880–85; < Greek mīkrón a little, noun use of neuter singular of mīkrós small; see -on ¹

Compare meaning

How does micron compare to similar and commonly confused words? Explore the most common comparisons:

• micron vs. nanometer

Example Sentences

He rates Micron at Buy, with a $1,625 price target.

From Barron's • Jun. 9, 2026

Shares of Micron fell 7.7% to $877.44 on Tuesday, having surged 9.9% the previous session.

From Barron's • Jun. 9, 2026

Shares of Micron were down more than 5% in Tuesday afternoon action along with other chip stocks.

From MarketWatch • Jun. 9, 2026

Shares of Micron Technology were climbing on Monday morning as investors warm back up to the memory trade following a sharp chip-sector selloff on Friday.

From MarketWatch • Jun. 8, 2026

We did stop by Michael’s on the way home and I got something called a Micron pen—a couple of them, in different line weights actually.

From "Popcorn" by Rob Harrell