To save this word, you'll need to log in.
Definition of vector sum
: the sum of a number of vectors that for the sum of two vectors is geometrically represented by the diagonal of a parallelogram whose sides represent the two vectors being added
Keep scrolling for more
Comments on vector sum
What made you want to look up vector sum? Please tell us where you read or heard it (including the quote, if possible).
Test Your Vocabulary
Semantic Drift Quiz
- Which of the following was once a synonym for fun?
Can you spell these 10 commonly misspelled words?
TAKE THE QUIZ
Test Your Knowledge - and learn some interesting things along the way.
TAKE THE QUIZLove words? Need even more definitions?
Merriam-Webster unabridgedWords at Play
Ask the Editors
Word Games
Share vector sum
Time Traveler for vector sum
The first known use of vector sum was circa 1890
See more words from the same year