There are 2 definitions of mag in English:

mag1

Syllabification: mag
Pronunciation: /maɡ
 
/

noun

informal
1A magazine (periodical).
More example sentences
  • Magazines, the new store on Church Street, offers foreign mags and back issues at unbelievable prices
  • The glossy mags are bought and paid for - and, in some cases, owned by the media conglomerates who own the record companies of the ‘artists’ they are trying to sell to you.
  • Not only did they give away free copies of their mag, they also gave away three month subscriptions as well.
2A magazine (of ammunition).
More example sentences
  • Immediately behind the working magazine is a spare mag held inside the stock by friction.
  • Included with the gun was a patented double magazine pouch that used a magnet to hold the spare mags.
  • This gave you a finger hold to get the mags out of the pouch.
3Magnesium or magnesium alloy.
More example sentences
  • Magnesium alloy wheels, or "mag wheels", are sometimes used on racing cars, in place of heavier steel or aluminum wheels, for better performance.
  • Mag mobile phones and laptops, mag taps, mag door handles, mag car trim, even mag power tools are set to transform the look, performance, feel and durability of hundreds of familiar items, thanks to a discovery by Australian scientists.
4A magneto.
More example sentences
  • It was then that I checked the mags on one of the Mustangs with the belt around the stick.
  • Don't worry about shutting off the fuel and mags on the inoperative engine at these low altitudes.
  • Many manufacturers also offer a remote option that allows the rider to adjust the mag unit from a lever on the handlebar.
5Magnitude (of stars or other celestial objects).
More example sentences
  • The magnitude dependent error is the brightness when the error becomes 1.0 mag.
  • The magnitude dependent error is the brightness when the error becomes 1.0 mag.
  • As a rough guide a decent 50mm pair of binoculars will take you from the naked eye limit of around mag. +6, to about mag. +10 (in suitable skies).

Definition of mag in:

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Word of the day inamorata
Pronunciation: inˌaməˈrätə
noun
a person's female lover

There are 2 definitions of mag in English:

mag2

Line breaks: mag

Entry from British & World English dictionary

Australian/NZ informal

verb (mags, magging, magged)

[no object]
Chatter incessantly.

noun

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A gossip or chat.

Origin

early 19th century: originally English dialect; related to magpie.

Definition of mag in: