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 math, parallel means two lines that never intersectââthink of an equal sign. Figuratively, parallel means similar, or happening at the same time. A story might describe the parallel lives of three close friends. As a noun, a parallel is a way in which things resemble each otherââyou might draw parallels between the Vietnam War and the US invasion of Iraq.