from The American Heritage® Dictionary of the English Language, 4th Edition
- n. An example that refutes or disproves a hypothesis, proposition, or theorem.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. An exception to a proposed general rule; a specific instance of the falsity of a universally quantified statement.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. refutation by example
counter- + example (Wiktionary)