Normal
Normal adjective - Forming a right angle.
Perpendicular and normal are semantically related. In some cases you can use "Perpendicular" instead the word "Normal" as an adjective or a noun.
Perpendicular
Perpendicular adjective - Intersecting at or forming right angles.
Usage example: the axes are perpendicular to each other
Normal and perpendicular are semantically related. Sometimes you can use "Normal" instead the word "Perpendicular" as an adjective or a noun.
Nearby Words: perpendicularity, perpendicularly
Both words in one sentence
- The capsule cannot be found until it is realised that "normal" was actually used in the geometric sense — "perpendicular", a polar orbit.
Source: Literature / Lucky Starr -
As the picture shows, it might be parallel or perpendicular to the two normal eyes.
Source: Third Eye - It is only found when Starr realises that "normal" in this case did not mean "standard" (an equatorial orbit), but an orbit normal (perpendicular) to a standard orbit — a polar orbit.
Source: Exact Words / Literature
Cite this Source
Perpendicular and Normal. (2016). Retrieved 2026, July 22, from https://thesaurus.plus/related/normal/perpendicular
Normal & Perpendicular. N.p., 2016. Web. 22 Jul. 2026. <https://thesaurus.plus/related/normal/perpendicular>.
Perpendicular or Normal. 2016. Accessed July 22, 2026. https://thesaurus.plus/related/normal/perpendicular.
Google Ngram Viewer shows how "normal" and "perpendicular" have occurred on timeline