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
Scientists used non-invasive micro-CT scanning to study it, producing over 2,000 tomographic images that revealed intricate details of its anatomy. Aamir Khollam, Interesting Engineering, 16 Oct. 2025 Brooks went for a black blazer and skirt set, which featured a micro miniskirt and an oversize blazer. Karla Rodriguez, Footwear News, 15 Oct. 2025
Noun
The fastest way to a stressful hosting experience is by micro-managing and trying to do everything yourself, from setting out food and drink to cleaning up to fluttering around to ensure nothing is going wrong. Kaitlyn Yarborough, Southern Living, 18 Oct. 2025 For mental rest, Singer suggests carving out daily micro-breaks — three to five minutes to breathe, reflect or write down one positive thing. Khloe Quill, FOXNews.com, 18 Oct. 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 23 Oct. 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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