zeta
noun
the sixth letter of the Greek alphabet (Z, ζ).
zeta
American
[zay-tuh, zee-]
/ ˈzeɪ tə, ˈzi- /
noun
-
the sixth letter of the Greek alphabet (Z, ζ).
-
the consonant sound represented by this letter.
ZETA
1
British
/ ˈziːtə /
noun
Zeta
2
British
/ ˈziːtə /
noun
zeta
3
British
/ ˈziːtə /
noun
Usage
What else does zeta mean? Zeta is a letter of the Greek alphabet. As a letter, zeta is popularly encountered in the names of fraternities and sororities. Zeta is also popularly associated with a famous alien abduction story. In men’s rights lingo, zeta refers to a man who refuses to have their masculinity defined by or in terms of women. What are some other words related to zeta?alphaomegamanosphereincel
Etymology
Origin of zeta
First recorded in 1820–30, zeta is from the Greek word zêta
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
See Examples For:
For decades, mathematicians have tried to prove the Riemann hypothesis, which says that 100% of the nontrivial zeros of the Riemann zeta function fall on a single vertical line.
From The Wall Street Journal ● Aug. 15, 2026
Among these is the famous zeta ring, a very faint and dusty celestial object first discovered by the Voyager 2 satellite in 1986.
From Salon ● Dec. 19, 2023
However, Riemann’s formula only holds if one assumes that the real parts of these zeta function zeroes are all equal to one-half.
From Science Magazine ● Sep. 24, 2018
As a physicist, I was aware that the zeros of the zeta function describe the distribution of the prime numbers.
From Nature ● Jul. 17, 2018
If this zeta field is causing this seemingly peculiar biological effect, that gives us a tremendously powerful new tool, for certain time vectors in the generalized matrix become parameters.
From Subspace Survivors by H. R. van Dongen
The firm plans to list itself on the New York Stock Exchange under the ticker symbol "ZETA".
From Reuters ● Apr. 26, 2021
Hours later, I was expelled from Zeta Beta Tau, my social fraternity, because its leaders were concerned my beliefs would reflect poorly on my brothers.
From The Wall Street Journal ● Sep. 29, 2026
The research was funded by internal grants from Marian University and Sigma Zeta.
From Science Daily ● Apr. 2, 2026
Zeta sells an AI agent to assist marketers.
From Barron's ● Jan. 30, 2026
Zeta Global Holdings was trading around $22.50 Wednesday.
From Barron's ● Jan. 14, 2026
The members are nice now that it’s all over, and I get into Kappa Zeta parties free.
From "The Freedom Writers Diary" by The Freedom Writers
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
