Xi Definition

zī, sī, ksē
noun
The fourteenth letter of the Greek alphabet (Ξ, ξ)
Webster's New World

(physics) Either of a pair of hyperons having spin 1/2, which decay into a lambda particle and a pion.

Wiktionary

(soccer) A football (soccer) team of eleven players.

Wiktionary
Synonyms:
abbreviation
Ex (without) interest.
Webster's New World

Other Word Forms of Xi

Noun

Singular:
xi
Plural:
xis

Origin of Xi

  • The beginning of the word chimera, with the x reflecting both the Greek etymology and the idea of crossed/mixed cell lines

    From Wiktionary

  • From Ancient Greek ξεῖ (ksei), ξῖ (ksi).

    From Wiktionary

  • Greek xei, xī

    From American Heritage Dictionary of the English Language, 5th Edition