geographical name
Lou·​i·​si·​ana | \ lu̇-ˌē-zē-ˈa-nə How to pronounce Louisiana (audio) , ˌlü-ə-zē-, ˌlü-zē- \

Definition of Louisiana

state of the southern U.S. that includes the vast delta through which the Mississippi River flows into the Gulf of Mexico; capital Baton Rouge area 48,523 square miles (126,160 square kilometers), population 4,533,372

Other Words from Louisiana

Louisianan \ lu̇-​ˌē-​zē-​ˈa-​nən How to pronounce Louisianan (audio) , ˌlü-​ə-​zē-​ , ˌlü-​zē-​ \ adjective or noun
Louisianian \ lu̇-​ˌē-​zē-​ˈa-​nē-​ən How to pronounce Louisianian (audio) , -​ˈa-​nyən \ adjective or noun

Learn More about Louisiana

Statistics for Louisiana

Cite this Entry

“Louisiana.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Louisiana. Accessed 4 Jun. 2020.

Keep scrolling for more

More from Merriam-Webster on Louisiana

Rhyming Dictionary: Words that rhyme with Louisiana

Nglish: Translation of Louisiana for Spanish Speakers

Britannica English: Translation of Louisiana for Arabic Speakers

Comments on Louisiana

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


See Definitions and Examples »

Get Word of the Day daily email!

Test Your Vocabulary

May 2020 Words of the Day Quiz

  • a blooming wisteria tree
  • Which is a synonym of exiguous?
Spell It

Can you spell these 10 commonly misspelled words?

Bee Cubed

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!