micro

1 of 3

adjective

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

micro

2 of 3

noun

plural micros
1
: microcomputer
2
: microprocessor

micro-

3 of 3

combining form

see micr-

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
Best mascara This mascara uses a brush with nearly 500 micro bristles to coat and lift every lash without clumping or smudging. — Casey Delbasso, ABC News, 31 July 2026 Lean into desert dressing with cowboy-core and micro shorts; embrace your boho dreams in flowy dresses and ruffles; or match the city grit with an oversized leather jacket and low-rise jeans. — Christina Perrier, InStyle, 30 July 2026 Umpleby was tasked with creating a special visual effect on Diana’s veil using 10,000 micro pearls. — Catherine Santino, PEOPLE, 29 July 2026 Rolling out micro feedback opportunities creates a rhythm of sharing information which allows leadership and the core change team to course correct the strategic roadmap quickly. — Kate Wieczorek, Forbes.com, 28 July 2026 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

Phrases Containing micro

Rhymes for micro

See All Rhymes for micro

Browse Nearby Words

micrinite
micro
micro-
See all Nearby Words

Cite this Entry

“Micro.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/micro. Accessed 5 Aug. 2026.

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Kids Definition

micro

adjective
mi·​cro
ˈmī-krō
: microscopic sense 3

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

Thesaurus: All synonyms and antonyms for micro

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