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.
parallel. ( 1 of straight lines) lying in the same plane but never meeting no matter how far extended. ( 2 of planes) having common perpendiculars. ( 3 of a single line, plane, etc.) equidistant from another or others (usually followed by to or with).