1The seventh letter of the Greek alphabet (Η, η), transliterated as ‘e’ or ‘ē’.‘This complex contains eight different homologous subunits, alpha, beta, gamma, delta, epsilon, zeta, eta, and theta.’‘The squads had been organized into Alpha, Beta, Gamma, Delta, Epsilon, Zeta, Eta and Theta.’
- 1.1Astronomy followed by Latin genitive The seventh star in a constellation.‘Eta Carinae’
- ‘This region, about 8000 light-years from Earth, is located near to the famous explosive variable star Eta Carinae, which lies just outside the field of view toward the upper right.’
- ‘The striking picture reveals an eclectic mix of embryonic stars living in the tattered neighborhood of one of the most famous massive stars in our Milky Way galaxy, Eta Carinae.’
- ‘Researchers using NASA's Far Ultraviolet Spectroscopic Explorer satellite have made the first ever direct observation of Eta Carinae's companion star.’
- ‘That galaxy is just a little more than one degree east of Eta Piscium.’
- ‘On the night of 10 September 1784, the English astronomer Edward Pigott noticed variations in the brightness of Eta Aquilae, a star lying in the constellation Aquila.’
- 1.1Astronomy followed by Latin genitive The seventh star in a constellation.
From Greek ēta.
An estimated time of arrival, in particular the time at which an aircraft or ship is expected to arrive at its destination.
A Basque separatist movement in Spain, founded in 1959.
Basque acronym, from Euzkadi ta Azkatasuna ‘Basque homeland and liberty’.
Edited to add (used in online discussions to indicate that one has modified the content of a post one has made, typically in order to add something)‘ETA: sorry, didn't see your post before I posted mine, @Abc!’