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1.
RDM
Random Death Match

The term comes from when a player kills you with no incentive in a game of Role Play.
WHO THE FUCK JUST FUCKING RDM'D ME?!?!
by snah June 29, 2009
 
2.
RDM
Real Dick Move. Frequently used during a seemingly non-competative sporting event (say hungover kickball, 4-square) where one person takes things way too seriously. This competative douchebag is pulling an RDM, or can be called an RDM.
He-Bruise just slammed the ball over her head... classic RDM.
by B-Crip May 25, 2011
 
3.
Rank Don't Mean Shit, Army slang opposite of RHIP Rank Has Its Privileges.
A new Army Second Leiutenant and I, an enlisted AF Sgt., both asked for the same Magazine on a chartered military flight going overseas. The flight attendant handed the Officer the only copy she had and apologized to me as she handed me a similar news magazine. The Officer looked at me and said RHIP. I replied, RDMS, he asked my friend sitting between us what it meant. He didn't say another word on the flight. He knew he was wrong to start something with an enlisted person especially cross-services.
by Panapada March 26, 2009
 
4.
RDM
Red Door Meet
A rapidly growing weekly car meet held in Portland Oregon. Now considered the largest weekly meet in the Pacific NW. The meet routinely attracts cars in the hundreds. Started by local area clubs mainly consisting of modified imports, it has grown to include a diverse variety of cars, trucks and motorcycles. located under the east side of the Morrison Bridge at 111 NE Belmont. The meet starts at 6:30 pm.

Come on! You know you want to roll through! But don't bring a green 4th Gen. Mustang...don't say I didn't warn ya!
This is an RDM example....>insert useful description/person/bodypart here<
by Me teh Awesome June 24, 2013
 
5.
RDM
abbreviation in FFXI for Red Mage
Yeah, my character on the Sylph server is a 71RDM/45WAR
by Terror Chan May 08, 2006
 
6.
rdm
Abbreviation for former football player now manager Roberto Di Matteo.
RDM should be given another chance in the premier league.
by d0m3 April 13, 2011
 
7.
rdm
Short for Ronald D. Moore.

Often used on forums and websites when referring to him.

He is widely known for creating, writing, and producing the smash-hit re-imagining of Battlestar Galactica.
RDM sure has some stuff up his sleeve for season 4... or better atleast...
by Travis Parker April 11, 2007