n. The prevailing current of thought, influence, or activity:
"You need not accept the nominee's ideology, only be able to locate it in the American mainstream" (Charles Krauthammer).
adj. Representing the prevalent attitudes, values, and practices of a society or group: mainstream morality.
tr.v., -streamed, -stream·ing, -streams.
1.To integrate (a student with special needs) into regular school classes.
E.g.: We have already taken a number of proactive measures to mainstream disability equality
2.To incorporate into a prevailing group.
mainstreamer : n.