What is the meaning of parallelism?

Answer 1

Extended in the same direction, and in all parts equally distant; as, parallel lines; parallel planes., Having the same direction or tendency; running side by side; being in accordance (with); tending to the same result; -- used with to and with., Continuing a resemblance through many particulars; applicable in all essential parts; like; similar; as, a parallel case; a parallel passage., A line which, throughout its whole extent, is equidistant from another line; a parallel line, a parallel plane, etc., Direction conformable to that of another line,, Conformity continued through many particulars or in all essential points; resemblance; similarity., A comparison made; elaborate tracing of similarity; as, Johnson's parallel between Dryden and Pope., Anything equal to, or resembling, another in all essential particulars; a counterpart., One of the imaginary circles on the surface of the earth, parallel to the equator, marking the latitude; also, the corresponding line on a globe or map., One of a series of long trenches constructed before a besieged fortress, by the besieging force, as a cover for troops supporting the attacking batteries. They are roughly parallel to the line of outer defenses of the fortress., A character consisting of two parallel vertical lines (thus, ) used in the text to direct attention to a similarly marked note in the margin or at the foot of a page., To place or set so as to be parallel; to place so as to be parallel to, or to conform in direction with, something else., Fig.: To make to conform to something else in character, motive, aim, or the like., To equal; to match; to correspond to., To produce or adduce as a parallel., To be parallel; to correspond; to be like.

Answer 2

two or more straight lines (or rows) that never intersects even if their lengths extended to infinity.