In computer and Internet phrases there are multiple definitions for the DM abbreviation, including the following:
- On the Twitter Web site (a free social messaging tool), DM is short for direct message, and it is used to send a private tweet (Twitter update) to a person you are following. You can view DMs from the Messages tab of your Twitter profile. You can also choose to receive email notification of new messages.
- Short for deathmatch, it is a type of gameplay mode found in first-person-shooter games.