[main.stream] n (1831): a prevailing current or direction of activity or influence -- mainstream adj
[2]main.stream vt (1974): to place (as a handicapped child) in regular school classes
[main.stream] n (1831): a prevailing current or direction of activity or influence -- mainstream adj
[2]main.stream vt (1974): to place (as a handicapped child) in regular school classes
Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012