Rectilinear

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


 * 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.