The powerful forces of gravity and magnetism channel matter into huge flattened spinning platters known as accretion disks.
The accretion of interest groups is not a uniquely American problem.
The direction of polarization for a quasar is determined by the accretion disk surrounding it.
accretion ac·cre·tion (ə-krē'shən)
Growth or increase in size by gradual external addition, fusion, or inclusion.
Increase by addition to the periphery of material of the same nature as that already present, as in the growth of crystals. Also called accrementition.
Foreign material, such as plaque or calculus, collecting on the surface of a tooth or in a cavity.
The growing together or adherence of body parts that are normally separate.