The meaning of PERPENDICULAR is standing at right angles to the plane of the horizon : exactly upright. How to use perpendicular in a sentence. Synonym Discussion of Perpendicular.

PERPENDICULAR definition: 1. at an angle of 90° to a horizontal line or surface: 2. at an angle of 90° to another line or…. Learn more.

PERPENDICULAR definition: vertical; straight up and down; upright. See examples of perpendicular used in a sentence.

A line is said to be perpendicular to a plane if it is perpendicular to every line in the plane that it intersects. This definition depends on the definition of perpendicularity between lines.

A perpendicular line or surface points straight up, rather than being sloping or horizontal. We made two slits for the eyes and a perpendicular line for the nose. The sides of the loch are …

Definition of perpendicular adjective from the Oxford Advanced Learner's Dictionary. perpendicular (to something) forming an angle of 90° with another line or surface; vertical and …

Dec 24, 2025 · perpendicular (plural perpendiculars) (geometry) A line or plane that is perpendicular to another. A device such as a plumb line that is used in making or marking a …

Use perpendicular to describe lines, angles, and direction. In geometry a perpendicular angle is 90 degrees, a perfect L. On a compass, East and North are perpendicular to each other. The …

Perpendicular lines are those lines that intersect each other at right angles (90°). Parallel lines are those lines that do not intersect anywhere and are always the same distance apart.

PERPENDICULAR meaning: going straight up or to the side at a 90 degree angle from another line or surface