Akademik

n., pl. TSRs, TSR's.

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

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

TSR (computing)

Terminate and Stay Resident, used of a program that remains in memory

Computing abbr. terminate and stay resident, denoting a type of program that remains in the memory of a microcomputer after it has finished running and which can be quickly reactivated