Miscalculation
The Century Dictionary and Cyclopedia
noun.
Erroneous calculation or estimate.
the GNU version of the Collaborative International Dictionary of English
noun.
a mistake in calculating.
noun.
An error in judgment, especially about the effects of action or the likely course of events.
Wiktionary, Creative Commons Attribution/Share-Alike License
noun.
An incorrect or mistaken
calculation
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
noun.
a mistake in calculating