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iota

[ahy-oh-tuh] /aɪˈoʊ tə/
noun
1.
a very small quantity; jot; whit.
2.
the ninth letter of the Greek alphabet (I, ι).
3.
the vowel sound represented by this letter.
Origin
1600-1610
1600-10; < Latin iōta < Greek iôta < Semitic; compare Hebrew yōdh yod
Synonyms
1. bit, particle, atom, grain, mite.
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for ι

iota

/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)
Word Origin
C16: via Latin from Greek, of Semitic origin; see jot
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
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Word Origin and History for ι

iota

n.

"very small amount," 1630s, figurative use of iota, ninth and smallest letter in the Greek alphabet. Modern use is after Matt. v:18 (see jot), but iota in classical Greek also was proverbially used of anything very small. The letter name is from Semitic (cf. Hebrew yodh).

Online Etymology Dictionary, © 2010 Douglas Harper
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ι in Medicine

ι
The Greek letter iota. Entries beginning with this character are alphabetized under iota.

iota i·o·ta (ī-ō'tə)
n.

Symbol ι The ninth letter of the Greek alphabet.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Idioms and Phrases with ι
The American Heritage® Idioms Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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