(geology) The largest earthquake in a sequence, sometimes preceded by foreshocks and almost always followed by aftershocks which are of lesser intensity.

Someone in the mainstream.

plural of mainshock

simple past tense and past participle of mainstream

The process of bringing something into the mainstream. / (education, chiefly US) The practice of educating students with special needs in regular classes.

present participle of mainstream

plural of mainstreamer

plural of mainsheet

plural of mainspace

The length of suspended roadway between the towers of a bridge.