micro

1 of 2

adjective

mi·​cro ˈmī-(ˌ)krō How to pronounce micro (audio)
1
: very small
especially : microscopic
2
: involving minute quantities or variations

micro

2 of 2

noun

plural micros

Examples of micro in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Adjective
In 2019, the Federal Bureau of Prisons (BOP) conducted a pilot test of micro-jamming technology at the Broad River Correctional Institution in Columbia, South Carolina. Will McCurdy, PC Magazine, 6 Sep. 2025 The prototype is built using commercially available parts, including micro-LED lights, optical lenses, and sensors from smartphone cameras, keeping costs down and making future mass production feasible. Neetika Walter, Interesting Engineering, 5 Sep. 2025
Noun
Analysts like him would pore over positive duplicates of negatives, examining them under a micro-stereoscope to see sites in three dimensions. Matthew Kayser, USA Today, 8 Sep. 2025 With tools like the Lyma Laser Pro ($5,995) boasting cold laser technology and NuFace leveraging micro current and red-light therapy ($595 for its most advanced set), approved by hundreds of dermatologists and influencers alike. Tanya Benedicto Klich, Forbes.com, 8 Sep. 2025 See All Example Sentences for micro

Word History

Etymology

Adjective

independent use of micro-

Noun

by shortening

First Known Use

Adjective

1923, in the meaning defined at sense 1

Noun

1971, in the meaning defined at sense 1

Time Traveler
The first known use of micro was in 1923

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Cite this Entry

“Micro.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/micro. Accessed 13 Sep. 2025.

Kids Definition

micro

adjective
mi·​cro
ˈmī-krō

Medical Definition

micro

adjective
mi·​cro ˈmī-(ˌ)krō How to pronounce micro (audio)
1
: very small
especially : microscopic
2
involving minute quantities or variations

More from Merriam-Webster on micro

Last Updated: - Updated example sentences
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