direction cosine

noun

Definition of direction cosine

: any of the cosines of the three angles between a directed line in space and the positive direction of the axes of a rectangular Cartesian coordinate system usually used in plural

First Known Use of direction cosine

circa 1889, in the meaning defined above

Learn More About direction cosine

Time Traveler for direction cosine

Time Traveler

The first known use of direction cosine was circa 1889

See more words from the same year

Dictionary Entries Near direction cosine

direction angle

direction cosine

direction finder

See More Nearby Entries 

Statistics for direction cosine

Cite this Entry

“Direction cosine.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/direction%20cosine. Accessed 17 May. 2022.

Style: MLA
MLACheck Mark Icon ChicagoCheck Mark Icon APACheck Mark Icon Merriam-WebsterCheck Mark Icon

WORD OF THE DAY

Test Your Vocabulary

Great Words for Scrabble

  • scrabble tiles that read scrabble quiz
  • Which of the following Q-without-U words means the number five in cards or dice?
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
Universal Daily Crossword

A daily challenge for crossword fanatics.

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!