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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:

Tossed with olive oil, tomatoes, jalapeño, feta and Parmesan cheese, the expertly al dente Rustichella rigatoni is not your everyday mac ‘n’ cheese dinner.

From Los Angeles Times May 23, 2026

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

They arrived alongside Kraft mac and cheese and green beans, the plate a tidy arrangement of beige, orange and green.

From Salon Apr. 10, 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

“You mean how I wanted mac and cheese?”

From "Americanah" by Chimamanda Ngozi Adichie

The government-backed mortgage giants Fannie Mae and Freddie Mac are asking condominiums to set aside more of their budgets in reserve accounts that can be used to pay for capital projects.

From The Wall Street Journal Aug. 9, 2026

Throughout the week people have been able to attend a dedicated Irish Language Hub at The Mac, which was also the venue for a performance by singer Kate Nash.

From BBC Aug. 9, 2026

But in early 2018, ahead of a planned tour, Buckingham was fired from Fleetwood Mac after Nicks allegedly issued the band an ultimatum threatening to leave if he wasn’t cut.

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

Just then, my fellow students came streaming into the room and within half an hour Ms. Mac had said good-bye to everyone, including me.

From "The World According to Humphrey" by Betty G. Birney

“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

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

“Meanwhile, the MAC is out here playing real football in front of 14 people and a raccoon on a Tuesday night during a blizzard.”

From The Wall Street Journal Dec. 24, 2025

“I know Brock Purdy HAS to start if he’s healthy but this is a hot hand situation right now and MAC is rolling!”

From The Wall Street Journal Nov. 13, 2025

Inspired by her time as a UC Santa Barbara Chicano Studies major and retail jobs at stores like MAC Cosmetics, her gender inclusive and ethically made “Mexi-goth” brand was a hit out the gate.

From Los Angeles Times Oct. 30, 2025

Now this angle AMC, being known, the right-angled triangle MAC is easily resolved, since the side AC of that triangle, being the radius of the earth, is a known dimension.

From A History of Science — Volume 2 by Williams, Henry Smith

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