Eta (Η, η) is the seventh letter of the Greek alphabet
Eta or ETA may also refer to:
People
- Eta (given name)
- Eta, a derogatory term for the Burakumin in the Japanese feudal era
- ETA, an Elvis Tribute Artist
Aircraft
- Eta (glider), a German glider
- CNA Eta, an Italian aircraft
Brands and enterprises
- Eta, a snack food brand owned by Griffin's Foods
- Empresa de Transporte Aéreo, a defunct Brazilian Airline
- Environmental Transport Association, a British roadside assistance company
- ETA SA, a Swiss watchmaking company
- ETA Star Group, a Dubai-based investment company
- ETA Systems, a defunct American computer manufacturer
Education
- Engineering & Technologies Academy, in San Antonio, Texas, United States
- Ethiopian Teachers' Association, a trade union
- Evangelical Theological Academy, in Zwijndrecht, Netherlands
- Evangelical Theological Association, a former teaching institute in Melbourne, Australia
Government and politics
- ETA (separatist group) (Basque: Euskadi Ta Askatasuna), a Basque armed separatist group
- Electronic Travel Authorization or Electronic Travel Authority, an alternative to a travel visa required by many countries for entry
- Employment and Training Administration, of the United States Department of Labor
- European Technical Assessment of the European Organisation for Technical Approvals
Mathematics
- Dedekind eta function
- Dirichlet eta function
- Eta conversion
- Eta invariant
- Weierstrass eta function
- The small letter eta is used as 't Hooft symbol
Science and technology
- Eicosatetraenoic acid
- Eta meson
- Ethanolamine
- Event tree analysis
- Exfoliatin
- Hapticity
- Pseudorapidity
- Reproduction factor, in the nuclear engineering four factor formula
- Viscosity
- Entropy as defined in Boltzmann's H-theorem
- SARS-CoV-2 Eta variant, one of the variants of SARS-CoV-2, the virus that causes COVID-19
Music
- "E.T.A.", a song by Damon & Naomi from More Sad Hits, 1992
- "E.T.A.", a song by Justin Bieber from Changes, 2020
- "ETA", a song by Dr. Dre, Snoop Dogg, Busta Rhymes and Anderson .Paak from GTA Online: The Contract, 2022
- "ETA" (song), a song by NewJeans from Get Up, 2023
Other uses
- Estimated time of arrival
- England Touch Association, the national governing body for touch rugby within England
- Hurricane Eta, a damaging and deadly Category 4 hurricane that occurred in the 2020 Atlantic hurricane season
- 'eta, a letter or glottal stop in the Tahitian languages
- Electronics Technicians Association, a professional association
- Landolphia owariensis, a vine native to Africa and sometimes known as eta
See also
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