Definition:Perpendicular/Also known as

Perpendicular: Also known as

The word normal is often used for perpendicular, particularly in the context of vector analysis.

Also, in the context of linear algebra and analysis, the word orthogonal is often encountered, which is a generalization of the concept of perpendicularity, but in a more abstract context than geometry

Sources

• 1998: David Nelson: The Penguin Dictionary of Mathematics (2nd ed.) ... (previous) ... (next): perpendicular
• 2008: David Nelson: The Penguin Dictionary of Mathematics (4th ed.) ... (previous) ... (next): perpendicular