Rolle's theorem

\ ˈrȯlz-, ˈrōlz-\

Definition of Rolle's theorem

: a theorem in mathematics: if a curve is continuous, crosses the x-axis at two points, and has a tangent at every point between the two intercepts, its tangent is parallel to the x-axis at some point between the intercepts

First Known Use of Rolle's theorem

1858, in the meaning defined above

History and Etymology for Rolle's theorem

Michel Rolle †1719 French mathematician

Keep scrolling for more

Learn More about Rolle's theorem

Share Rolle's theorem

Statistics for Rolle's theorem

Look-up Popularity

Time Traveler for Rolle's theorem

The first known use of Rolle's theorem was in 1858

See more words from the same year

Comments on Rolle's theorem

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


tremendous in size, volume, or degree

Get Word of the Day daily email!

Test Your Vocabulary

Homophone Quiz

  • three-bears-two-of-them-look-like-theyre-whispering-to-a-third-bear-who-looks-chuffed-to-be-the-center-of-attention
  • In order to judge how people felt, the senator's office hired a firm to take a ______.
Spell It

Can you spell these 10 commonly misspelled words?

Word Winder's CrossWinder

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


Love words? Need even more definitions?

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