Main Tank Difference
MTD is an extremely common acronym used by Professional players of the game Overwatch. It means that the team who won the match did so because that team had a better main tank who carried them to victory.
Super - Overwatch League Main Tank for the SanFran SHOCK
Sleepy - Retired support for the Washington Justice

Super: gg
Sleepy: MTD
Super: WHAT DO YOU MEAN MAIN TANK DIFFERENCE?
by shinsyu June 17, 2020
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Multi Track Drifting

Often used in Trolley Problem Memes.
In a Comic (Densha de D) there is one rather famous picture of a train with front and back wheels on different rails and a character saying "Multi Track Drifting".
This merged with the Trolley Problem memes, as you can kill all 6 people tied to the tracks by multi track drifing.
Trolley Problem Meme: "There are five vegetarians tied to a track and a trolley is approaching which will overrun them. You can save them by pulling a lever which changes the trolley's track to one where only one vegan is tied. What do you do?"
Comment: "MTD!"
by PattuX June 19, 2017
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MTD, or MySpace Transmitted Disease, is something you implicitly have when you are added by a girl with a webcam. They are nasty people, who in all likeliness do not care who they ask to be their freinds, they just want to be "watched". These can also be contracted by people who are added by MySpace whores, aka people with over 200 friends who are not musicians.
"'Hey man, check this out! 'hi! i'm jennifer and i'm kinda new to this, but ur 2 cute!!! i also have a ****free webcam**** check it out!!!!' 'Sick, I can already feel the MTD settling in.'"

by Kate Baynham December 3, 2006
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MTD is the maximum time a critical process can be down, or hindered in some way, without irreparable harm to the business. It’s typically calculated as part of a business impact analysis (BIA).
what is the MTD for this database server ?
by aboola February 14, 2013
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Mentally Transmitted Disease
Frank went to church one time and believed what they said, now he has an MTD
by brandonger November 16, 2007
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A person who's clumsy, slow, and doesn't speak a sentence of correct English.
A person who has MTD never gets a joke, constantly trips over things that's been there forever, and pronounces iron as "i-ron".
by Mai N June 8, 2010
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A musically transmitted disease
Person one: LALALALALALA
Person two: Why are you singing that?
Person one: My friend "Bob" gave me an MTD
by AnnaBearr July 7, 2009
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