One's social heritage, or previous life; what one did in the past.

“The lawyer had a background in computer science.”

A part of the picture that depicts scenery to the rear or behind the main subject; context.

Information relevant to the current situation about past events; history.

To put in a position that is not prominent.

To gather and provide background information (on).

Less important or less noticeable in a scene or system.

“The antivirus program runs on a background thread.”