STR may refer to any of the following:
1. Short for suspend to RAM, STR is a process started when a computer enters suspend mode. Any information that is currently being utilized is stored in memory, allowing components in the computer to be turned off to conserve power. When the computer resumes activity, the stored information is then returned to its original state.
2. STR is an acronym for send to receive.
3. STR is shorthand for strength, which is often a specific attribute related to attack power for a game character. In MMO games, items that a character can utilize (armor and weapons) empowers them by increasing the amount of strength for a character.