Planar and Rectilinear

Planar

Planar adjective - Involving two dimensions.

Rectilinear is an antonym for planar.

Nearby Word: plane

Rectilinear

Rectilinear adjective - Characterized by a straight line or lines.

Planar is an antonym for rectilinear.
Cite this Source
Rectilinear and Planar. (2016). Retrieved 2026, August 14, from https://thesaurus.plus/related/planar/rectilinear
Planar & Rectilinear. N.p., 2016. Web. 14 Aug. 2026. <https://thesaurus.plus/related/planar/rectilinear>.
Rectilinear or Planar. 2016. Accessed August 14, 2026. https://thesaurus.plus/related/planar/rectilinear.
Google Ngram Viewer shows how "planar" and "rectilinear" have occurred on timeline