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iota

American  
[ahy-oh-tuh] / aɪˈoʊ tə /

noun

  1. a very small quantity; jot; whit.

    Synonyms:
    mite, grain, atom, particle, bit

  2. the ninth letter of the Greek alphabet (I, ι).

  3. the vowel sound represented by this letter.

iota British  
/ aɪˈəʊtə /

noun

  1. the ninth letter in the Greek alphabet (Ι, ι), a vowel or semivowel, transliterated as i or j

  2. (usually used with a negative) a very small amount; jot (esp in the phrase not one or an iota )

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
iota Idioms  

  1. see not one iota.

Etymology

Origin of iota

1600–10; < Latin iōta < Greek iôta < Semitic; compare Hebrew yōdh yod

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.