Meanings
Greisen-Zatsepin-Kuzmin limit1
alternative Greisen-Zatsepin-Kuzmin Limit
- astronomyA theoretical upper limit on the energy of cosmic ray protons travelling from other galaxies through the intergalactic medium to the Milky Way.
Synonyms: GZK, GZK Limit, GZK limit, Greisen-Zatsepin-Kuzmin cutoff, Greisen-Zatsepin-Kuzmin Cut-off, Greisen-Zatsepin-Kuzmin Cut-Off, Greisen-Zatsepin-Kuzmin Cutoff, Greisen-Zatsepin-Kuzmin cut-off
Greisen-Zatsepin-Kuzmin Limit2
- alternativeAlternative form of Greisen-Zatsepin-Kuzmin limit.
Synonyms & antonyms
proper nounA theoretical upper limit on the energy of cosmic ray protons travelling from other galaxies through the intergalactic medium to the Milky Way.
Origin
From the surnames of the three physicists who proposed this limitation on the long distance travel of energetic particles. From Greisen + Zatsepin + Kuzmin. Named after the American physicist Kenneth Greisen, and the Soviet physicists Georgiy Zatsepin, and Vadim Kuzmin. The Soviet and the American teams each discovered the limit separately in the 1960s, being independently computed in 1966.
Full word history & related roots →Cite this entry
Greisen-Zatsepin-Kuzmin limit. (n.d.). In WatkinsX Dictionary. Retrieved November 5, 2026, from https://dictionary.watkinsx.com/word/Greisen-Zatsepin-Kuzmin%20limit
“Greisen-Zatsepin-Kuzmin limit.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/Greisen-Zatsepin-Kuzmin%20limit. Accessed November 5, 2026.
WatkinsX Dictionary, s.v. “Greisen-Zatsepin-Kuzmin limit,” accessed November 5, 2026, https://dictionary.watkinsx.com/word/Greisen-Zatsepin-Kuzmin%20limit.
Source: Greisen-Zatsepin-Kuzmin limit on Wiktionary, CC BY-SA 4.0.