olemus
(1a) tagaplaan otseses (pilt, heli) tähenduses
Wiktionary:
2. part of the picture that depicts scenery to the rear or behind the main subject
4. a less important feature of scenery (as opposed to foreground)
5. (computing) the image or color over which a computer's desktop items are shown (e.g. icons or application windows)
https://wikidiff.com/foreground/background
https://en.wikipedia.org/wiki/Background_noise
https://en.wikipedia.org/wiki/Background_music
(1b) samaaegne teisejärguline protsess
Wiktionary:
6. (computing) a type of activity on a computer that is not normally visible to the user
The antivirus program is running in the background.
ISO/IEC/IEEE 24765:
töödete plaanimisel töötluskeskkond, kus täidetakse madala prioriteediga protsesse või kasutaja sekkumise vajaduseta protsesse
= in job scheduling, the computing environment in which low-priority processes or those not requiring user interaction are executed
https://en.wikipedia.org/wiki/Background_process

vt ka
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