n The name of the sixth letter of the modern
Greek alphabet (
(term|Ζ|sc=Grek),
(term|ζ|sc=Grek)) preceded by
epsilon (
(term|Ε|sc=Grek),
(term|ε|sc=Grek)) and followed by
eta, (
(term|Η|sc=Grek),
(term|η|sc=Grek)); or the seventh letter in the ancient Greek alphabet, in which it is preceded by
digamma (
(term|Ϝ|sc=Grek),
(term|ϝ|sc=Grek))