Merriam-Webster Logo
SINCE 1828
Menu
×

xi

noun \ ˈzī , ˈksī \

Definition of xi

plural xis
: the 14th letter of the Greek alphabet — see Alphabet Table

See xi defined for kids

Origin and Etymology of xi

Greek xei

Other Alphabet Terms

cuneiform, linear, minuscule, pictograph, rune, symbology, wedge

Xi

geographical name
variants: or Hsi or Si play \ˈshē\

Definition of Xi

river 300 miles (483 kilometers) long in Guangxi Zhuangzu and Guangdong, southeastern China, flowing east into the South China Sea

Learn More about xi

  1. See words that rhyme with xi

Seen and Heard

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

show hide

Love words? Need even more definitions?

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

WORD OF THE DAY

quail

play

to recoil in dread or terror

Get Word of the Day daily email!

TRENDING NOW

  1. insubordinate 'disobedient to authority'

  2. promulgate 'to make known by open declaration'

  3. epochal 'momentous or unparalleled'

  4. clemency 'merciful treatment of someone who could be given harsh punishment'

  5. suborn 'to induce to commit perjury'

SEE ALL

BROWSE DICTIONARY

xi
Xi

Test Your Vocabulary

Name More Food!

  • red-fruit
  • Name that Fruit!
Spell It

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ
Word Winder's CrossWinder

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!

Words at Play

Ask the Editors

Word Games