eta

noun

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.”

2. (particle)A kind of electrically neutral meson having zero spin and isospin.
3. A social outcast in Japan who is subjected to menial work, making up a class or caste of such people.
4. (alt-of, alternative)Alternative form of ita (“kind of palm tree”).
5. (abbreviation, alt-of, initialism)Initialism of estimated time of arrival.

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

6. (abbreviation, alt-of, initialism)Initialism of electronic travel authorisation.
7. (abbreviation, alt-of, initialism)Initialism of Elvis tribute artist, a professional impersonator who performs as Elvis Presley.

name

1. (abbreviation, acronym, alt-of)Acronym of Euskadi Ta Askatasuna.
2. (abbreviation, alt-of, initialism)Initialism of Electronic Travel Authority (Australia).

verb

1. (Internet, abbreviation, alt-of, initialism)Initialism of edited to add.