The seventh letter of the Modern Greek alphabet, the eighth in Old Greek. / (physics) A kind of electrically neutral meson having zero spin and isospin.

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

Acronym of Euskadi Ta Askatasuna. / Initialism of Electronic Travel Authority. (Australia)

Initialism of estimated time of arrival. / Initialism of Elvis tribute artist. A professional impersonator who performs as Elvis Presley.

(Internet slang) Initialism of edited to add.

Initialism of estimated time approximately.

plural of eta

plural of ETA

(physics) Describing a specific form of an eta meson

(physics) Either of two mesons made of a mixture of up, down and strange quarks and their antiquarks