mainstream: Meaning and Definition of

main•stream

1. the principal or dominant course, tendency, or trend: the mainstream of American culture.
2. a river having tributaries.

1. belonging to or characteristic of a principal, dominant, or widely accepted group, movement, style, etc.: mainstream Republicans; a mainstream artist.
2. of, pertaining to, or characteristic of jazz falling historically between Dixieland and modern jazz; specifically, swing music. Cf.(def. 4).

1. to send into the mainstream; cause to join the main force, group, etc.: to mainstream young people into the labor force.
2. to place (handicapped students) in regular school classes.

1. to join or be placed in the mainstream.