i·o·ta

[ahy-oh-tuh]
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:
1600–10; < Latin iōta < Greek iôta < Semitic; compare Hebrew yōdh yod


1. bit, particle, atom, grain, mite.
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Based on the Random House Dictionary, © Random House, Inc. 2013.
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Collins
World English Dictionary
iota (aɪˈəʊtə) [Click for IPA pronunciation guide]
 
n
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 oneoran iota)
 
[C16: via Latin from Greek, of Semitic origin; see jot]

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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00:10
Iota is a GRE word you need to know.
So is torpid. Does it mean:
slow; dull; apathetic; lethargic.
appropriateness to the purpose or circumstances; suitability.
Etymonline
Word Origin & History

iota
1636, figurative use of iota, ninth and smallest letter in the Gk. alphabet, after Matt. v:18 (see jot). The letter name is from Heb. yodh.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

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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FOLDOC
Computing Dictionary

Iota definition

language, specification
A specification language.
["The Iota Programming System", R. Nakajima er al, Springer 1983].
(1994-12-08)

The Free On-line Dictionary of Computing, © Denis Howe 2010 http://foldoc.org
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American Heritage
Idioms & Phrases

iota

see not one iota.

The American Heritage® Dictionary of Idioms by Christine Ammer.
Copyright © 1997. Published by Houghton Mifflin.
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Example sentences
So much for the plot's human element-not one iota of romance.
These people are so backward, and so full of hatred and bigotry, they do not
  deserve even one iota of our sympathy.
Interesting seeing how the senators have no iota what they were talking about.
But she had no intention of relinquishing an iota of the visual power or
  immediacy staked out by preceding postwar art movements.
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