Rectilinear means related to a straight line; it may refer to:

  • Gnomonic projection, also called rectilinear projection
  • Rectilinear grid, a tessellation of the Euclidean plane
  • Rectilinear lens, a photographic lens
  • Rectilinear locomotion, a form of animal locomotion
  • Rectilinear polygon, a polygon whose edges meet at right angles
  • Rectilinear propagation, a property of waves
  • Rectilinear Research Corporation, a now defunct manufacturer of high-end loudspeakers
  • Rectilinear style, the third historical division of English Gothic architecture
  • Rectilinear motion or linear motion is motion along a straight line
  • Rectilinear prophecy, where a straight line can be drawn from the prophecy to the fulfillment without any branches as in the case of typological interpretations
  • Near-rectilinear halo orbit, a highly-elliptical orbit around a Lagrangian point of a moon, that due to the moons orbital movement, will be nearly rectilinear in some frames of reference.

See also

  • Linear (disambiguation)
  • Straight (disambiguation)