xi

noun

ˈzī  ˈksī 

plural xis

: the 14th letter of the Greek alphabet see Alphabet Table

Word History

Etymology

Greek xei

First Known Use

15th century, in the meaning defined above

Kids Definition

xi

noun

ˈzī  ˈksī 

: the 14th letter of the Greek alphabet

—Ξ or ξ

Geographical Definition

Xi

geographical name

ˈshē 

variants or Hsi or Si

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