To save this word, you'll need to log in.
Definition of coefficient
1 : any of the factors of a product considered in relation to a specific factor especially : a constant factor of a term as distinguished from a variable
2a : a number that serves as a measure of some property or characteristic (as of a substance, device, or process)
coefficient of expansion of a metal
b : measure
Keep scrolling for more
Keep scrolling for more
Keep scrolling for more
Test Your Vocabulary
Great Scrabble Words—A Quiz
- Which of the following Q-without-U words means the number five in cards or dice?

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
Great Scrabble Words—A Quiz
Words to improve your Scrabble game
Take the quizSemantic Drift Quiz
A challenging quiz of changing words.
Take the quizSpell It
Can you spell these 10 commonly misspelled words?
Take the quizDictionary Devil
The dictionary has been scrambled—can you put it back together?
Play the game
Share coefficient
Time Traveler for coefficient
The first known use of coefficient was circa 1715
See more words from the same year