In geometry, parallel lines are lines in a plane which do not meet. The assumed existence and properties of parallel lines are the basis of Euclid's parallel postulate. Two lines in a plane that do not intersect or touch at any point are said to be parallel. By extension, a line and a plane, or two planes, in three-dimensional Euclidean space that do not share a point are said to be parallel.

The above text is a snippet from Wikipedia: Parallel (geometry)
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  1. One of a set of parallel lines.
  2. Direction conformable to that of another line.
  3. A line of latitude.
    The 31st parallel passes through the center of my town.
  4. An arrangement of electrical components such that a current flows along two or more paths; see in parallel.
  5. Something identical or similar in essential respects.
  6. A comparison made; elaborate tracing of similarity.
    Johnson's parallel between Dryden and Pope
  7. 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.
  8. 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.


  1. To construct or place something parallel to something else.
  2. Of a path etc: To be parallel to something else.
  3. Of a process etc: To be analogous to something else.
  4. To compare or liken something to something else.
  5. To make to conform to something else in character, motive, aim, etc.
  6. To equal; to match; to correspond to.
  7. To produce or adduce as a parallel.


  1. Equally distant from one another at all points.
    The horizontal lines on my notebook paper are parallel.
  2. Having the same overall direction; the comparison is indicated with "to".
    The railway line runs parallel to the road.
    The two railway lines are parallel.
  3. said of a pair of lines: that they either do not intersect or they coincide
  4. Involving the processing of multiple tasks at the same time
    a parallel algorithm


  1. With a parallel relationship.
    The road runs parallel with the canal.

The above text is a snippet from Wiktionary: parallel
and as such is available under the Creative Commons Attribution/Share-Alike License.

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