background

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

someone's past, both the social world they grew up in and what they have done since

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

A less important feature of scenery (as opposed to foreground).

The image or color over which a computer's desktop items are shown (e.g. icons or application windows).

A type of activity on a computer that is not normally visible to the user.

An extra who appears in the background, with no speaking role.

Ellipsis of background radiation.

To place in the background.

(figurative) To put in a position that is not prominent.

To gather and provide background information (on).

To increase the weight and immunity of (a calf) by feeding with forage and grains, as an intermediate stage in cattle production, between weaning and placement in a feedlot.

Less important or less noticeable in a scene or system.