We found 11 dictionaries that define the word principal diagonal:

General (9 matching dictionaries)

1. principal diagonal: Merriam-Webster
2. principal diagonal: Oxford Learner's Dictionaries
3. principal diagonal: American Heritage Dictionary of the English Language
4. principal diagonal: Vocabulary.com
5. principal diagonal: Dictionary.com
6. principal diagonal: Rhymezone
7. principal diagonal: FreeDictionary.org
8. principal diagonal: Mnemonic Dictionary
9. principal diagonal: TheFreeDictionary.com

Computing (1 matching dictionary)

10. principal diagonal: Encyclopedia

Science (1 matching dictionary)

11. Principal Diagonal: Eric Weisstein's World of Mathematics

(Note: See principal_diagonals as well.)

Definitions from WordNet (principal diagonal) ▸ noun:  the diagonal of a square matrix running from the upper left entry to the lower right entry Opposite: secondary diagonal, antidiagonal ▸ Words similar to principal diagonal ▸ Usage examples for principal diagonal ▸ Idioms related to principal diagonal ▸ Wikipedia articles (New!) ▸ Words that often appear near principal diagonal ▸ Rhymes of principal diagonal ▸ Invented words related to principal diagonal