- (hyperbolic geometry) said of a pair of lines: that they either do not intersect or they coincide
- Having the same overall direction; the comparison is indicated with "to".
"The two railway lines are parallel."
- (computing) Involving the processing of multiple tasks at the same time
"a parallel algorithm"
- Equally distant from one another at all points.
"The horizontal lines on my notebook paper are parallel."
"The railway line runs parallel to the road."
- With a parallel relationship.
"The road runs parallel with the canal."
- One of a set of parallel lines.
- An arrangement of electrical components such that a current flows along two or more paths; see in parallel.
- (military) 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 line of latitude.
"The 31st parallel passes through the center of my town."
- A comparison made; elaborate tracing of similarity.
"Johnson's parallel between Dryden and Pope"
- Direction conformable to that of another line.
- Something identical or similar in essential respects.
- (printing) A character consisting of two parallel vertical lines, used in the text to direct attention to a similarly marked note in the margin or at the foot of a page.
- To equal; to match; to correspond to.
- Of a path etc: To be parallel to something else.
- To make to conform to something else in character, motive, aim, etc.
- To construct or place something parallel to something else.
- To compare or liken something to something else.
- To produce or adduce as a parallel.
- Of a process etc: To be analogous to something else.