Missouri

geographical name
Mis·​sou·​ri | \ mə-ˈzu̇r-ē How to pronounce Missouri (audio) , by some residents mə-ˈzu̇r-ə How to pronounce Missouri (audio) \

Definition of Missouri

1 river 2466 miles (3968 kilometers) long in the western U.S. flowing from southwestern Montana into the Mississippi River in eastern Missouri — see three forks

Note: The waters that flow from the head of the Missouri to the mouth of the Mississippi form the longest stretch of river in North America 3877 miles (6238 kilometers).

2 state in the central U.S. having the Mississippi River forming its borders with Illinois, Kentucky, and Tennessee; capital Jefferson City area 69,697 square miles (180,515 square kilometers), population 5,988,927

Other Words from Missouri

Missourian \ mə-​ˈzu̇r-​ē-​ən How to pronounce Missourian (audio) \ adjective or noun

Learn More about Missouri

Statistics for Missouri

Look-up Popularity

More from Merriam-Webster on Missouri

Britannica English: Translation of Missouri for Arabic Speakers

Comments on Missouri

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

WORD OF THE DAY

of or relating to a parable or parabola

Get Word of the Day daily email!

Test Your Vocabulary

A Green Quiz

  • shamrock
  • What is the best definition of green-eyed monster?
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

TAKE THE QUIZ
Syn City

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!