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eta

1 of 2

noun

ˈā-tə How to pronounce eta (audio)
 chiefly British  ˈē-tə
: the 7th letter of the Greek alphabet see Alphabet Table

ETA

2 of 2

abbreviation

estimated time of arrival

Word History

Etymology

Noun

Middle English, from Late Latin, from Greek ēta, of Semitic origin; akin to Hebrew ḥēth heth

First Known Use

Noun

15th century, in the meaning defined above

Time Traveler
The first known use of eta was in the 15th century

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