[ey-tuh, ee-tuh]
the seventh letter of the greek alphabet (H, η).
the vowel sound represented by this letter.

< Greek êta; compare Hebrew ḥeth heth Unabridged


estimated time of arrival.
Also, ETA. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
eta1 (ˈiːtə)
the seventh letter in the Greek alphabet (Η, η), a long vowel sound, transliterated as e or ē
[Greek, of Phoenician origin; compare Hebrew heth]

eta2 (ˈeɪtə)
n , pl eta, etas
(in Japan, formerly) a member of a class of outcasts who did menial and dirty tasks
[C19: Japanese]

abbreviation for
estimated time of arrival

ETA2 (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
[Basque, literally: Basque Nation and Liberty]

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Word Origin & History

abbreviation of estimated time (of) arrival, first attested 1939.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

eta e·ta (ā'tə, ē'tə)

Symbol η 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.
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American Heritage
Abbreviations & Acronyms
  1. embryo toxicity assay

  2. Employment and Training Administration

  3. estimated time of arrival

The American Heritage® Abbreviations Dictionary, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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