- orthogonal (adj.)
[orthogonal 词源字典]
- 1570s, from French orthogonal, from orthogone, from Late Latin orthogonius, from Greek orthogonios "right-angled," from ortho- "straight" (see ortho-) + gonia "angle" (see -gon). Related: Orthogonally.[orthogonal etymology, orthogonal origin, 英语词源]