[awr-thog-uh-nl] /ɔrˈθɒg ə nl/
Crystallography. referable to a rectangular set of axes.
relating to, consisting of, or involving right angles; perpendicular
1570s, from French orthogonal, from orthogone, from Late Latin orthogonius, from Greek orthogonios “right-angled,” from ortho- “straight” (see ortho-) + gonia “angle,” related to gony “knee” (see knee (n.)). Related: Orthogonally.
- Orthogonal matrix
noun 1. (maths) a matrix that is the inverse of its transpose so that any two rows or any two columns are orthogonal vectors Compare symmetric matrix
noun, Mathematics. 1. the locus of a point whose path cuts each curve of a family of curves at right angles.
orthograde or·tho·grade (ôr’thə-grād’) adj. Walking or standing erect.
- Orthograde degeneration
orthograde degeneration n. See wallerian degeneration.