orthonormal
adjective
orthonormal is an adjective meaning “Of a set of vectors, both orthogonal and normalized” (English Wiktionary, September 2026). It is spelled O-R-T-H-O-N-O-R-M-A-L, and it appears about once in every 10 million words in written English (wordfreq, 2021 data).
What does orthonormal mean?
adjective
- 1
Of a set of vectors, both orthogonal and normalized.
- 2
Of a linear transformation: that preserves both angles and lengths.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
How do you pronounce orthonormal?
- US
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract). Recordings: LL-Q1860_(eng)-Flame,_not_lame-orthonormal.wav, Wikimedia Commons (author and licence on each file's page).
How common is orthonormal?
Orthonormal appears about once in every 10 million words in written English, the 93,703rd most frequent word form in the list.
Source: written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).
Orthonormal in Spanish, French, German and Portuguese
In the sense mathematical term:
| Language | Words |
|---|---|
| German | orthonormal |
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract). Translations are Wiktionary's, by sense; a linked word has its own PlainSpell page.
Where does orthonormal come from?
Blend of orthogonal + normal, equivalent to ortho- + normal.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).