mi·​cro | \ ˈmī-(ˌ)krō How to pronounce micro (audio) \

Definition of micro

 (Entry 1 of 2)

1 : very small especially : microscopic
2 : involving minute quantities or variations


plural micros

Definition of micro (Entry 2 of 2)

Examples of micro in a Sentence

Recent Examples on the Web: Adjective Though the urge to drown your hands in hand sanitizer and sizzle off whatever micro-organisms might be lingering on your skin is strong, try to resist. Jesa Marie Calaor, Allure, "Why Your Hands May Be Peeling This Winter, According to Dermatologists," 11 Feb. 2020 This means multiplying particular micro-organisms, to produce particular products, in factories. Aric Jenkins, Fortune, "Facebook Drops the Mic on Political Advertising," 9 Jan. 2020 UBiome has sought to build a business on tests of the microbiome, the micro-organisms in the gut and other parts of the body. Anna Wilde Mathews, WSJ, "Lab Startup uBiome Laying Off About Half of Global Workforce," 10 July 2019 The state agencies know local needs on a micro level. Brian T. Allen, National Review, "COVID Cash for the Arts: Where to Start," 2 May 2020 Like other quarantine micro-trends—sourdough starters, for one—the drink grew popular online for being both easy to make and pretty to photograph. Shirley Li, The Atlantic, "In 1950, Americans Had Aspic. Now We Have Dalgona Coffee.," 29 Apr. 2020 The level of micro-managing involved in the reopening is Italian bureaucracy at its worst. Bernhard Warner, Fortune, "Global stocks rise as investors cheer the easing of lockdown measures," 27 Apr. 2020 Larger, non-micro 1:32 scale Scalextric model slot cars are also available for about $50 each, including the Aston Martin V8 Vantage (below) and the Aston Martin DB5, both from the upcoming No Time to Die. Sebastian Blanco, Car and Driver, "Official Model Cars From the Bond Films Ready for Your Order," 16 Apr. 2020 What would life be right now without all these precious micro moments? Perri Ormont Blumberg, Southern Living, "Kansas City's Jones Bar-B-Q Installs Temperature-Controlled Barbecue Vending Machine Outside Their Store," 15 Apr. 2020 Recent Examples on the Web: Noun Japan's space agency is aiming to send a micro-explorer to orbit the Moon, possibly in the first half of the 2020s, using a solid-fuel Epsilon rocket, Kyodo News reports. Eric Berger, Ars Technica, "Rocket Report: Russia suspends Soyuz production, OneWeb seeks a rescue," 17 Apr. 2020 If someone comes to examine your house, that person may not have been in your micro-neighborhood for a while, if ever. Ron Lieber, New York Times, "Rushing to Refinance Your Mortgage: 6 Tips and What to Avoid," 13 Mar. 2020 Eventually, the government established an innovative micro-cerclage -- micro-encirclement -- approach. Dr. Tom Frieden, CNN, "Lessons from Ebola: The secret of successful epidemic response," 11 Mar. 2020 The keyboard connects wirelessly over Bluetooth or can be plugged into your computer via a micro USB cable. Billy Cadden, Popular Science, "Home studio gear to help scratch your musical itch," 5 Feb. 2020 The speedway’s seats were scantily filled; most attendees camped in a micro-civilization of tents and R.V.s. Antonia Hitchens, The New Yorker, "No Impeachment Talk at Daytona," 3 Feb. 2020 The genuine leather sneakers by Pop, available to shop on Amazon, have rechargeable LED lights that turn on and off and come with a dual-charging micro USB cable. Erin Parker, Glamour, "We Found Taylor Swift’s ‘Party Shoes’ From the Miss Americana Documentary," 31 Jan. 2020 Neta Madrecuixe Super-complex with notes of citrus, grass, and pepper, this rare micro-batch mezcal from the Miahuatlan region of Oaxaca is prized by restaurateurs and bar owners. Sunset Magazine, "Build the Ultimate Bar Cart with These Award-Winning Spirits," 12 Apr. 2020 Our study finds that women managers of micro and small firms are more likely than men to self-select out of the credit market. Hanan Morsy For Cnn Business Perspectives, CNN, "Opinion: The real thing holding Africa's female entrepreneurs back," 8 Mar. 2020

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'micro.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of micro


1923, in the meaning defined at sense 1


1971, in the meaning defined at sense 1

History and Etymology for micro



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Time Traveler for micro

Time Traveler

The first known use of micro was in 1923

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Statistics for micro

Last Updated

25 May 2020

Cite this Entry

“Micro.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/micro. Accessed 6 Jun. 2020.

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More Definitions for micro


mi·​cro | \ ˈmī-(ˌ)krō How to pronounce micro (audio) \

Medical Definition of micro

1 : very small especially : microscopic
2 involving minute quantities or variations

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More from Merriam-Webster on micro

Thesaurus: All synonyms and antonyms for micro

Spanish Central: Translation of micro

Britannica English: Translation of micro for Arabic Speakers

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