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  • mac
    mac
    noun
    fellow; bud (a familiar term of address to a man or boy whose name is not known to the speaker).
  • Mac
    Mac
    noun
    a male given name.
  • Mac.
    Mac.
    abbreviation
    Maccabees.
  • M.Ac.
    M.Ac.
    abbreviation
    Master of Accountancy.
  • Mac-
    Mac-
    a prefix found in many family names of Irish or Scottish Gaelic origin, as MacBride and Macdonald.
  • MAC
    MAC
    abbreviation
    multiplexed analogue component: a transmission coding system for colour television using satellite broadcasting
Synonyms

mac

1 American  
[mak] / mæk /

noun

(often initial capital letter)
  1. fellow; bud (a familiar term of address to a man or boy whose name is not known to the speaker).


mac 2 American  
[mak] / mæk /
Or mack

noun

Informal.
  1. a mackintosh.

  2. McIntosh.


mac 3 American  
[mak] / mæk /
Mac 4 American  
[mak] / mæk /

noun

  1. a male given name.


Mac. 5 American  

abbreviation

  1. Maccabees.


M.Ac. 6 American  

abbreviation

  1. Master of Accountancy.


Mac- 7 American  
Also Mc-,
  1. a prefix found in many family names of Irish or Scottish Gaelic origin, as MacBride and Macdonald.


Mac 1 British  
/ mæk /

noun

  1. an informal term of address to a man

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

MAC 2 British  

abbreviation

  1. multiplexed analogue component: a transmission coding system for colour television using satellite broadcasting

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Mac. 3 British  

abbreviation

  1. Maccabees (books of the Apocrypha)

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Mac- 4 British  

prefix

  1. (in surnames of Scottish or Irish Gaelic origin) son of

    MacDonald

    MacNeice

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

mac 5 British  
/ mæk /

noun

  1. informal short for mackintosh mackintosh

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of mac1

First recorded in 1650–60; special use of Mac

Origin of mac2

Shortened form

Origin of mac3

Shortened form

Origin of Mac-7

< Irish, Scots Gaelic mac son, Old Irish macc; akin to Welsh, Cornish mab

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

The offerings include returning items, such as a smoky burger and chicken sandwich, plus a new side — mac and cheese.

From MarketWatch Apr. 29, 2026

I think the first time I went, they had a really good oxtail mac and cheese.

From Los Angeles Times Apr. 10, 2026

I once ordered it at a chain restaurant that shall remain diplomatically unnamed, only to discover that it was functionally identical to the toddler’s mac and cheese at our table.

From Salon Apr. 7, 2026

Berkshire’s Warren Buffett had said breaking up the maker of Heinz ketchup and Kraft mac and cheese would be costly and disruptive, and that shareholders should have gotten a vote.

From The Wall Street Journal Mar. 27, 2026

I helped Grandma clean up the mess while the mac and cheese baked.

From "From the Desk of Zoe Washington" by Janae Marks

That's not to mention Ryan Reynolds and Rob Mac - formerly known as Rob McElhenney - at Wrexham, and Tom Brady's Birmingham, in the Championship.

From BBC Aug. 11, 2026

Nvidia’s announcement comes a day after Meta Platforms released its latest open model, Muse Glimmer, which the company touted as “small enough to run on a Mac or PC with a single consumer GPU.”

From The Wall Street Journal Aug. 11, 2026

Former Fleetwood Mac guitarist Lindsey Buckingham has opened up about how he and Stevie Nicks were able to move past their longtime feud while working together on an upcoming documentary for the iconic band.

From Los Angeles Times Aug. 7, 2026

On TV, actors Rob Mac and Ryan Reynolds’ excursion into the wild world of British Premier football, “Welcome to Wrexham,” recently expanded to include a women’s team, the Red Dragons.

From Salon Aug. 7, 2026

Mac picked up the kitchen phone and dialed.

From "Eleven" by Tom Rogers

“Mac Jones, for sure. Yeah, Mac. He’s the best,” Parker said.

From Washington Times Aug. 3, 2023

“My life was completely wrapped up in Fleetwood Mac. You can call in sick to a job, a boyfriend, even a husband, but you cannot call in sick to Fleetwood Mac – ever.”

From The Guardian Apr. 17, 2019

“It was only made for the Mac. It was less than one percent market share in the U.S. They like to say ‘low single digits.’

From The Verge Jun. 13, 2017

"He was the first person to buy a Mac. He was the first person to tell me about the Internet. I had no idea what he was talking about."

From Los Angeles Times Jul. 25, 2015

Calista threw away a coupon for a free Big Mac. cumin.

From "Woe Is I" by Patricia T. O'Conner

Apple tends to hold a second Mac- or iPad-focused event in the fall roughly every other year.

From Slate Sep. 11, 2018

Simply put: If your school requires any Mac- or Windows-only apps, then you can’t use an iPad in place of an actual laptop.

From Slate Jul. 27, 2018

Kathlene Mac- Donell is rather better as the cabaret performer.

From Time Magazine Archive

He went farther in ten days than did Britisher Mac- Laren, covering 5,468 miles in 45 hours and 20 minutes of actual flying time.

From Time Magazine Archive

While we were taking Bougainville, General Mac- Arthur’s forces would be landing on the western end of New Britain Island at Cape Gloucester to establish a new airfield there, too.

From "Code Talker: A Novel About the Navajo Marines of World War Two" by Joseph Bruchac

The U.S. company—home to brands such as MAC, Smashbox and Jo Malone—has been undergoing a business turnaround under new leadership.

From The Wall Street Journal Mar. 24, 2026

The athletic department is paying $23 million over five years to move its football team into the MAC and paying travel costs for league opponents to play in Sacramento.

From Los Angeles Times Feb. 24, 2026

He said that its “consumer-facing” investments included opening new retail locations for its luxury fragrance brands while closing some of its MAC and Origins locations.

From MarketWatch Feb. 5, 2026

On Tuesdays and Wednesdays, that means the MAC.

From The Wall Street Journal Dec. 24, 2025

I thought, true as steel, They would both come to heel, Making up for the pack Whistled off by false MAC, As though he'd ever shoot with my patience and skill!

From Punch, or the London Charivari, Volume 101, August 15, 1891 by Various

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