orthagonal

Adjective

orthogonal (not comparable)

1. Of two objects, at right angles; perpendicular to each other.
   • A chord and the radius that bisects it are orthogonal.
2. Of a pair of vectors: having a zero inner product; perpendicular.
   • The normal vector and tangent vector at a given point are orthogonal.
3. Of a square matrix: such that its transpose is equal to its inverse.
4. Of a linear transformation: preserving its angles.
5. Of grid graphs, board games and polyominoes: vertical or horizontal but not diagonal.
6. Of a pair of elements in an ortholattice: each less than or equal to the orthocomplement of the other.

See all 10 meanings of orthogonal