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• eta
  eta

  noun

  the seventh letter of the Greek alphabet (H, η).
• E.T.A.
  E.T.A.

  abbreviation

  estimated time of arrival.
• ETA
  ETA

  abbreviation

  estimated time of arrival

eta

¹ American  

[ay-tuh, ee-tuh] / ˈeɪ tə, ˈi tə /

noun

1. the seventh letter of the Greek alphabet (H, η).

2. the vowel sound represented by this letter.

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E.T.A. ² American  

Or ETA

abbreviation

1. estimated time of arrival.

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ETA ¹ British  

abbreviation

1. estimated time of arrival

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ETA ² British  

/ ˈɛtə /

acronym

1. 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

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eta ³ British  

/ ˈiːtə /

noun

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

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eta ⁴ British  

/ ˈeɪtə /

noun

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

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Etymology

Origin of eta

< Greek êta; compare Hebrew ḥeth heth

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Example Sentences

See Examples For:

eta E.T.A. ETA

But other variants – eta, theta, iota – were quickly steamrolled and are now irrelevant.

From Seattle Times ● Dec. 14, 2021

Status Symbol The H on the men’s clothing is the Greek letter eta.

From National Geographic

About one-thirtieth of the times that a pi meson hit a deuterium nucleus, out came the eta meson, which decays into three pions.

From Time Magazine Archive

The importance of those men dressed in white is clearly shown by the symbol that looks like an H, the Greek letter eta.

From National Geographic

The shapes of eta, theta, pi, and other testing letters are such as we might have expected from the date; some others have an older look.

From A Plain Introduction to the Criticism of the New Testament, Vol. I. by Frederick Henry Ambrose Scrivener

The Nutcracker and the Mouse King This new holiday special draws on the 1818 book by E.T.A.

From Los Angeles Times ● Dec. 14, 2021

I really enjoyed “The Nutcracker”! I know that it is based on a story by E.T.A.

From Washington Post ● Dec. 20, 2019

The ballet was based on a story called ‘The Nutcracker and the Mouse King’ by the German writer E.T.A.

From Fox News ● Dec. 18, 2018

Many of these questions are answered in the original story The Nutcracker and the Mouse King, written by E.T.A.

From Time ● Dec. 21, 2011

Having been nurtured in the traditions of the romanticism of Tieck, E.T.A.

From The German Classics of the Nineteenth and Twentieth Centuries, Volume 09 Friedrich Hebbel and Otto Ludwig by Various

Rollout of the electronic travel authorization program, similar to the UK’s ETA, has been repeatedly delayed.

From The Wall Street Journal ● Aug. 14, 2026

He said his ETA was 5 p.m., and it ended up being 5:25 p.m., typical 405 Freeway.

From Los Angeles Times ● Jul. 10, 2026

At some point, you realize the ETA is 30 minutes, and the remaining distance is three miles.

From Barron's ● May 3, 2026

Visitors to the UK need an ETA if they do not need a visa for short stays of up to six months, or do not already have a UK immigration status.

From BBC ● Apr. 15, 2026

She quickly opened a message to her father, then typed: ETA?

From "The Parker Inheritance" by Varian Johnson

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