iota

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i·o·ta / īˈōtə/ • n. 1. the ninth letter of the Greek alphabet (Ι, ι), transliterated as ‘i.’ ∎  (Iota) [followed by Latin genitive] Astron. the ninth star in a constellation: Iota Piscium.2. [in sing.] an extremely small amount: nothing she said seemed to make an iota of difference.

The Oxford Pocket Dictionary of Current English

iota

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iota the ninth (and smallest) letter of the Greek alphabet (Ι, ι), transliterated as ‘i’. Often used, as in not one iota, to mean an extremely small amount.

The Oxford Dictionary of Phrase and Fable ELIZABETH KNOWLES

iota

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iota the Gr. letter ι; least particle. XVII. — Gr. iôta. See JOT.

The Concise Oxford Dictionary of English Etymology T. F. HOAD

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