Definition of "disproof" [dis•proof]

• The act of refuting or disproving. (noun)
• Evidence that refutes or disproves. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "Mathematics is not falsifiable by empirical evidence it is falsiable by the possibility of mathematical disproof, which is not the same thing."
• "Zeno's method; for _dissolvere_ should refer to Zeno's method of disproof, which is not properly called dilemma."
• "I wonder what you make of Columbus '"disproof" of the flat earth theory."