(computing, DWH) Initialism of dimensional modeling. / (logic) Initialism of De Morgan’s law. / (money) Initialism of Deutsche Mark. / (nutrition) Initialism of dry matter.

To Dungeon Master; to perform as a dungeon master; to run a tabletop role-playing game. / To communicate by direct message, usually on a social website.

(UK) Initialism of Daily Mail. (a national newspaper) / (linguistics) Initialism of Distributed Morphology.

(chemistry, uncountable) Initialism of DiMethyl Sulfide. / (computing) Initialism of Document Management System. / (databases) Initialism of Database Management System.

(colloquial) Dr. Martens boots or shoes.

plural of DM

Third-person singular simple present indicative form of DM

Disaster Management Open Platform for Emergency Networks. A system which provides interoperability interfaces for sharing of emergency-related information to vetted emergency management agencies.

(slang) To confidently and coolly send a direct message to someone via social media, especially with romantic intentions.