Zeta

Definitions

1. The sixth letter of the modern Greek alphabet (Ζ, ζ) preceded by epsilon (Ε, ε) and followed by eta, (Η, η); or the seventh letter in the ancient Greek alphabet, in which it is preceded by digamma (Ϝ, ϝ)
2. medieval state roughly equivalent to modern Montenegro.
   historical
3. A member of Los Zetas, a Mexican criminal syndicate.
4. Acronym of zero-energy thermonuclear assembly/apparatus (“a torus-shaped reactor used in the mid-20th century to carry out experiments in plasma physics and temperature-controlled thermonuclear reactions”).
   abbreviation, acronym, alt-of
5. A mathematical function, formally known as the Riemann zeta function.

Equivalents

Examples

“Zeta of 3 is irrational”

CEFR level