zeta

[ zey-tuh, zee- ]
/ ˈzeɪ tə, ˈzi- /

noun

the sixth letter of the Greek alphabet (Z, ζ).
the consonant sound represented by this letter.

Origin of zeta

First recorded in 1820–30, zeta is from the Greek word zêta
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for zeta

British Dictionary definitions for zeta (1 of 3)

zeta

/ (ˈziːtə) /

noun

the sixth letter in the Greek alphabet (Ζ, ζ), a consonant, transliterated as z

Word Origin for zeta

from Greek, of Semitic origin; compare Hebrew sādhē

British Dictionary definitions for zeta (2 of 3)

Zeta

/ (ˈziːtə) /

noun

(foll by the genitive case of a specified constellation) the sixth brightest star in a constellationZeta Tauri

British Dictionary definitions for zeta (3 of 3)

ZETA

/ (ˈziːtə) /

noun

a torus-shaped apparatus used for research in the 1950s and early 1960s on controlled thermonuclear reactions and plasma physics

Word Origin for ZETA

C20: from z (ero-) e (nergy) t (hermonuclear) a (pparatus)
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medicine definitions for zeta

zeta

[ zātə, zē- ]

n.

The sixth letter of the Greek alphabet.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.