## Definition of orthogonal

**:**intersecting or lying at right angles

- In orthogonal cutting, the cutting edge is perpendicular to the direction of tool travel.

**:**having perpendicular slopes or tangents at the point of intersection

- orthogonal curves

**:**having a sum of products or an integral (see

^{1}integral 1b) that is zero or sometimes one under specified conditions: such as

**:**having the integral of the product of each pair of functions over a specific interval equal to zero

**:**having the sum of products of corresponding elements in any two rows or any two columns equal to one if the rows or columns are the same and equal to zero otherwise

**:**having a transpose with which the product equals the identity matrix

**:**having a matrix (see matrix 5a) that is orthogonal

**:**preserving length and distance

**:**composed of mutually orthogonal elements

- an orthogonal basis of a vector space

**:**statistically independent

- mental ability may be classified into several orthogonal … factors
- —O. D. Duncan