zeta(redirected from Zeta (letter))
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The sixth letter of the Greek alphabet. See Table at alphabet.
(Letters of the Alphabet (Foreign)) the sixth letter in the Greek alphabet (Ζ, ζ), a consonant, transliterated as z
[from Greek, of Semitic origin; compare Hebrew sādhē]
(Astronomy) (foll by the genitive case of a specified constellation) the sixth brightest star in a constellation: Zeta Tauri.
(Nuclear Physics) a torus-shaped apparatus used for research in the 1950s and early 1960s on controlled thermonuclear reactions and plasma physics
[C20: from z(ero-)e(nergy) t(hermonuclear) a(pparatus)]
ze•ta(ˈzeɪ tə, ˈzi-)
n., pl. -tas.
the sixth letter of the Greek alphabet (Ζ, ζ).
[1820–30; < Greek zêta]