WARNING: Antidepressant medications are used to treat a variety of conditions, including depression and other mental/mood disorders. These medications can help prevent suicidal thoughts /attempts and provide other important benefits.
Definition of parallel for Students. 1  1 : a line or surface that lies at or moves in the same direction as another but is always the same distance from it. 2  2 : one of the imaginary circles on the earth's surface running in the same direction as the equator and marking latitude.
In a parallel relationship or manner: a road and a railway that run parallel. n. 1. Mathematics One of a set of parallel geometric figures, such as lines or planes. 2. a. One that closely resembles or is analogous to another: a unique event, without parallel in history.