TSR

American  

noun

plural

TSRs, TSR's

1. a computer program with any of several ancillary functions, usually held resident in RAM for instant activation while one is using another program.

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Etymology

Origin of TSR

t(erminate and) s(tay) r(esident)

Example Sentences

Nearly two decades ago, Ruohonen became a partner at TSR Injury Law.

From The Wall Street Journal • Feb. 11, 2026

Ms. Jaquays eventually worked with gaming friends to produce The Dungeoneer, a fanzine of D&D content for which she secured permission from TSR, the company that published the game.

From New York Times • Feb. 1, 2024

Arneson left TSR in 1976 after a dispute over credit and royalties, and TSR moved from Gygax’s basement to the former Hotel Clair, a dump in downtown Lake Geneva, where its staff grew.

From Washington Post • Aug. 26, 2022

“It founded a means for socially awkward people to socialize,” said early TSR employee and Dragon editor Tim Kask.

From Slate • Nov. 16, 2015

Copies portions of itself into Video RAM and treats it as a TSR.

From Terminal Compromise: computer terrorism: when privacy and freedom are the victims: a novel by Schwartau, Winn