principal diagonal

noun

Definition of principal diagonal

: the diagonal in a square matrix that runs from upper left to lower right

First Known Use of principal diagonal

1962, in the meaning defined above

Keep scrolling for more

Learn More about principal diagonal

Time Traveler for principal diagonal

Time Traveler

The first known use of principal diagonal was in 1962

See more words from the same year

Statistics for principal diagonal

Cite this Entry

“Principal diagonal.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/principal%20diagonal. Accessed 27 Sep. 2020.

Comments on principal diagonal

What made you want to look up principal diagonal? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

Test Your Vocabulary

Challenging Vocabulary Quiz Returns!

  • stylized drawing of woman pole vaulting across gap to get trophy
  • Which is a synonym of fuliginous?
Spell It

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ
Bee Cubed

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!