mac

1 of 6

noun (1)

variants or mack
British

mac

2 of 6

noun (2)

informal
: macaroni
commonly used in the compounds mac and cheese and mac 'n' cheese
For those tired of seafood—it happens—a homey mac and cheese was the comfort food for the day.Sam Gugino
Dear Barbecue Joint: You make amazing mac 'n' cheese … but must you add crumbled bacon?Julie R. Smith

Mac

3 of 6

noun (3)

: fellow
used informally to address a man whose name is not known

Mac

4 of 6

abbreviation (1)

Machabees

Mac

5 of 6

abbreviation (2)

variants or Macc
Maccabees

MAC

6 of 6

abbreviation (3)

military airlift command

Examples of mac in a Sentence

Noun (1) I'm glad the little nipper remembered his mac today, because it's supposed to rain.
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.
Noun
The company noted that the larger of the two models can run on a single Nvidia 80GB chip, while the smaller one fits on consumer hardware like a Mac laptop. Sharon Goldman, Fortune, 5 Aug. 2025 This version stuck with the same basic design, but gave it a somewhat softer and less metallic look—those of you with long enough memories may recall that Yosemite was the Mac's first facelift of the iOS 7 era, and getting rid of pseudo-realistic textures was a major design goal. Andrew Cunningham, ArsTechnica, 5 Aug. 2025 During his career, Reid toured with Cream, Fleetwood Mac, Jethro Tull and more. Daniela Avila, People.com, 5 Aug. 2025 There are also numerous first-time nominees, including Mac Miller, who is being recognized posthumously for the visual accompaniment to Balloonerism. Matthew Strauss, Pitchfork, 5 Aug. 2025 The keyboard also has dimmable white backlighting and comes with replaceable keycaps for Mac or Windows. Mark Sparrow, Forbes.com, 5 Aug. 2025 Now, to be clear, Reynolds and Mac do have their own ownership stake in Necaxa (and, reciprocally, the Necaxa ownership group has a small stake in Wrexham). Daniel Fienberg, HollywoodReporter, 5 Aug. 2025 Apple's annual back-to-school sale is still going, but unlike last year, Apple isn’t offering gift cards on iPad and Mac purchases. PC Magazine, 4 Aug. 2025 Mac’s wish became McElhenney’s reality in June 2019 when the actor caught the first pitch from Utley at a Phillies game. James Mercadante, EW.com, 4 Aug. 2025
Noun
The company noted that the larger of the two models can run on a single Nvidia 80GB chip, while the smaller one fits on consumer hardware like a Mac laptop. Sharon Goldman, Fortune, 5 Aug. 2025 This version stuck with the same basic design, but gave it a somewhat softer and less metallic look—those of you with long enough memories may recall that Yosemite was the Mac's first facelift of the iOS 7 era, and getting rid of pseudo-realistic textures was a major design goal. Andrew Cunningham, ArsTechnica, 5 Aug. 2025 During his career, Reid toured with Cream, Fleetwood Mac, Jethro Tull and more. Daniela Avila, People.com, 5 Aug. 2025 There are also numerous first-time nominees, including Mac Miller, who is being recognized posthumously for the visual accompaniment to Balloonerism. Matthew Strauss, Pitchfork, 5 Aug. 2025 The keyboard also has dimmable white backlighting and comes with replaceable keycaps for Mac or Windows. Mark Sparrow, Forbes.com, 5 Aug. 2025 Now, to be clear, Reynolds and Mac do have their own ownership stake in Necaxa (and, reciprocally, the Necaxa ownership group has a small stake in Wrexham). Daniel Fienberg, HollywoodReporter, 5 Aug. 2025 Apple's annual back-to-school sale is still going, but unlike last year, Apple isn’t offering gift cards on iPad and Mac purchases. PC Magazine, 4 Aug. 2025 Mac’s wish became McElhenney’s reality in June 2019 when the actor caught the first pitch from Utley at a Phillies game. James Mercadante, EW.com, 4 Aug. 2025

Word History

Etymology

Noun (3)

Mac-, Mc-, patronymic prefix in Scottish and Irish surnames

First Known Use

Noun (1)

1901, in the meaning defined above

Noun (2)

1920, in the meaning defined above

Noun (3)

circa 1918, in the meaning defined above

Time Traveler
The first known use of mac was in 1901

Browse Nearby Words

Cite this Entry

“Mac.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/mac. Accessed 9 Sep. 2025.

Medical Definition

mac

1 of 2 abbreviation
macerate

MAC

2 of 2 abbreviation
1
maximum allowable concentration
2
Mycobacterium avium complex
Last Updated: - Updated example sentences
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