[ ey-tuh, ee-tuh ]
/ ˈeɪ tə, ˈi tə /


the seventh letter of the Greek alphabet (H, η).
the vowel sound represented by this letter.

Origin of eta

< Greek êta; compare Hebrew ḥeth heth

Definition for eta (2 of 2)


or ETA

estimated time of arrival. Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Examples from the Web for eta

British Dictionary definitions for eta (1 of 4)

/ (ˈiːtə) /


the seventh letter in the Greek alphabet (Η, η), a long vowel sound, transliterated as e or ē

Word Origin for eta

Greek, of Phoenician origin; compare Hebrew heth

British Dictionary definitions for eta (2 of 4)

/ (ˈeɪtə) /

noun plural eta or etas

(in Japan, formerly) a member of a class of outcasts who did menial and dirty tasks

Word Origin for eta

C19: Japanese

British Dictionary definitions for eta (3 of 4)


abbreviation for

estimated time of arrival

British Dictionary definitions for eta (4 of 4)

/ (ˈɛtə) /

n acronym for

Euzkadi ta Askatsuna: an organization of militant Basque nationalists attempting to gain independence for the Basques, esp those ruled by Spain, until a ceasefire in 1998, by means of guerrilla warfare

Word Origin for ETA

Basque, literally: Basque Nation and Liberty
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medical definitions for eta

[ ātə, ētə ]


The seventh letter of the Greek alphabet.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.