noun.
The ninth, and smallest, letter of the Greek alphabet.
noun.
A jot; a very small, inconsiderable quantity.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
noun.
a tiny or scarcely detectable amount
noun.
the 9th letter of the Greek alphabet
Word Usage
"She is a fresh face on the scene, but the ideas she espouses are certainly not fresh; they deviate not an iota from the Karl Rove memo-of-the-day repeated endlessly by the clones at Fox."