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
The oversize everyday bag continues to dominate, particularly in supple suede finishes, while mini and micro bags remain relevant through playful interpretations featuring embroidery, charms and decorative details. — Sandra Salibian, Footwear News, 13 Oct. 2026 In comparison, Jackery's barrel ports feel like getting something with a micro-USB port instead of a USB-C port, which all your cords and charging blocks are set up to handle. — Michael Lydick, PC Magazine, 9 Oct. 2026 Morgan Stanley weighed in on this macro versus micro debate on Wednesday. — Jeff Marks, CNBC, 7 Oct. 2026 That's because the micro-level contest-specific data is lagging behind the macro-level national data. — Nathan Gonzales Cq-Roll Call, Arkansas Online, 6 Oct. 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 14 Oct. 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

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