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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

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).

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mac ² American  

[mak] / mæk /

Or mack

noun

Informal.

1. a mackintosh.

2. McIntosh.

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mac ³ American  

[mak] / mæk /

noun

1. macaroni.

2. macaroni and cheese.

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Mac ⁴ American  

[mak] / mæk /

noun

1. a male given name.

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Mac. ⁵ American  

abbreviation

1. Maccabees.

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M.Ac. ⁶ American  

abbreviation

1. Master of Accountancy.

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Mac- ⁷ American  

Also Mc-,

1. a prefix found in many family names of Irish or Scottish Gaelic origin, as MacBride and Macdonald.

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Mac ¹ British  

/ mæk /

noun

1. an informal term of address to a man

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MAC ² British  

abbreviation

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

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Mac. ³ British  

abbreviation

1. Maccabees (books of the Apocrypha)

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Mac- ⁴ British  

prefix

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

   MacDonald

   MacNeice

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mac ⁵ British  

/ mæk /

noun

1. informal short for mackintosh mackintosh

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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

Apple’s Mac computer lineup was powered by Intel chips from 2005 to 2021.

From MarketWatch • Jun. 18, 2026

The project was set up by former BBC Radio 1 and 1Xtra DJ Toddla T, who's married to DJ Annie Mac, to highlight UK talent.

From BBC • Jun. 18, 2026

One solution could be to give the government-sponsored housing enterprises, Fannie Mae and Freddie Mac, an expanded role in lowering the price of construction loans for apartment buildings.

From The Wall Street Journal • Jun. 17, 2026

Spiegel pointed to the hefty price tags of the Mac in 1984 and Apple’s $3,500 mixed-reality headset.

From Los Angeles Times • Jun. 16, 2026

Now I want to know: What was Ms. Mac thinking?

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

Related Words

• PC
• data processor
• desktop computer
• personal computer