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.

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