1. The Death of 1,000,000 people in a nuclear explosion

2. A band created by former metallica guitarist dave mustaine , They play harder and faster than MetallicA ... They also stick to what they are good at and didn't sell out like MetallicA.

Their best albums include RUST IN PEACE, PEACE SELLS BUT WHOSE BUYING and COUNTDOWN TO EXTINCTION
Megadeth are the best speed metal band ever
by Junglemanchild January 26, 2005
The worlds state of the art speed metal band
Megadeth is the greatest band ever
by TheNuke January 29, 2003
1. Unit of measurement equal to the death of one million people by nuclear explosion.

2. The world's state of the art speed metal band.
Megadeth's RUST IN PEACE is one of the greatest metal albums ever made.
by Jim April 20, 2003
a band formed by dave mustaine, a metal genius
if it wasnt for dave mustaine, you would have never heard of metallica. He WAS metallica, until james and lars kicked him out of the band and stole all of his ideas.
by Anonymous September 12, 2003
A band that started in the early 80's that possess, and probably created, several of the compulsory characteristics for playing metal. E.G. - long hair, skull paraphenalia, tight jeans (preferably ripped), at least two albums with 8 (minimum) or 9 (maximum)tracks but still under 50 minutes long.
RUST IN PEACE IS THE BEST OLD-SKOOL METAL ALBUM. nu-metal is gay.
by oblivion cunt October 13, 2003
A fantastic speed metal band.
Let's go listen to Megadeth and Byzantine....\m/
by Returner April 16, 2004
The world's state-of-the-art Thrash Metal band.
by Drew October 27, 2003
thrash, speed metal. recently released the system has failed. classic albums like countdown to extinction, peace sells, and cryptic writings, etc.
If you haven't downloaded the conjuring live 92, then you should jump off a bridge right now.
by anonymous May 01, 2005

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