eta

plural etas

1. The seventh letter of the Modern Greek alphabet, the eighth in Old Greek.

   Greek was an exercise in making the familiar strange. Its alphabet mapped onto the Roman alphabet, but only partly so, and often letters did not sound how they looked — a rho (Ρ) was not a P, and an eta (Η) was not an H.

   2022, R. F. Kuang, Babel, HarperVoyager, page 25

2. particlenatural sciencesA kind of electrically neutral meson having zero spin and isospin.

plural etas

1. A social outcast in Japan who is subjected to menial work, making up a class or caste of such people.

plural etas

1. alternativeAlternative form of ita (“kind of palm tree”).

plural ETAs

1. abbreviationinitialismInitialism of estimated time of arrival.

   We're even, as long as we're only counting today. Kilo 023, what's your ETA?

   2007 September 25, Bungie, Halo 3, spoken by Avery Johnson (David Scully), Microsoft Game Studios, Xbox 360, level/area: Sierra 117

2. abbreviationinitialismlifestyleInitialism of Electronic Travel Authorization, a type of electronic visa.
3. abbreviationinitialismentertainmentInitialism of Elvis tribute artist, a professional impersonator who performs as Elvis Presley.

1. InternetabbreviationinitialismInitialism of edited to add.

1. abbreviationacronymhistoricalAcronym of Euskadi Ta Askatasuna, a Basque separatist organization active from 1959 to 2018.

   They include northern Spain’s Catalan independence movement and political descendants of the Basque secessionist group ETA, who infuriated voters before local elections in May when they fielded 44 convicted terrorists as candidates, including seven found guilty of murder.

   2023 July 21, Jason Horowitz, “In Spain’s Election, Left and Right Answer for the Company They Keep”, in The New York Times, →ISSN

2. AustraliaabbreviationinitialismInitialism of Electronic Travel Authority.

1. historicalAlternative letter-case form of ETA.

   1 more example

   The Basque terrorist group Eta, which killed more than 800 people during its four-decade armed campaign, has apologised for the suffering it caused and asked for the forgiveness of victims and their families as it prepares to dissolve. […] “We wish to show our respect for those who were killed or wounded by Eta and those who were affected by the conflict. We are truly sorry.”

   2018 April 20, Sam Jones, “'We are truly sorry': Eta apologises for four decades of deadly violence”, in The Guardian, →ISSN, archived from the original on 27 Apr 2019

plural eTAs

1. Alternative letter-case form of ETA (“Electronic Travel Authorization”)