ξ

Etymology
Joined, cursive variant of Ξ; see joined variant of Ξ at right, showing development of ξ.

Symbol

 * 1)  Extent of reaction
 * 2)  Gnarl

Etymology
Joined up cursive variant of its majuscule counterpart Ξ.

Letter

 * 1) Lower-case xi, the 14th letter of the ancient Greek alphabet. It represented the consonant cluster . It is preceded by ν and followed by ο.

Derived terms
See also xi

Letter

 * 1) The lower case letter ksi/xi (ξι), the 14th letter of the modern Greek alphabet.