mega

adj

1. (informal, not-comparable)Very large.

   “Follow those in the know to the fifth floor of Sega's Joy Polis, a mega indoor amusement park that's part of the Odaiba Decks Tokyo Bay entertainment complex near Tange's Fuji Television building.”

2. (not-comparable, slang)Great; excellent.

   “We had a mega time until Peter fell in the fish pond and cut his leg.”

   “It was totally mega. The audience clapped and cheered when Teasel had finally finished. So did I.”

   “July 15, 2011, Liam Gallagher, quoted at the launch of the new Manchester City F.C. kit I've been a City fan since I was a kid, so to be involved with the launch of a new kit is colossal. Manchester City fans are known for having a lot of style and the new shirt looks mega.”

adv

1. (informal)Extremely.

   “mega-fun”

   “mega rich”

noun

1. (informal)A megararity (extremely rare bird for a certain region).

   “And, speaking of relative banalities, the recurring Semipalmated Plover at the Broom Sewage Works may have inured us slightly to the status of the species as a rare vagrant, but it was an undeniable "mega" when one was discovered on Lord Howe Island on 23 March.”

2. The Steinhaus-Moser number ②
3. (abbreviation, alt-of, initialism)Initialism of Moon-Earth gravity assist.
4. (abbreviation, alt-of, initialism)Initialism of Mars-Earth gravity assist.

name

1. (countable, uncountable)A placename
2. (countable, uncountable)A placename
3. (countable)A surname.

phrase

1. (alt-of)Alternative letter-case form of MEGA (“Make Europe Great Again”).

   “Rather he was outlining the Mega (Make Europe Great Again) project in support of the far right across Europe.”

2. (European, abbreviation, alt-of, initialism)Initialism of Make Europe Great Again.