Definition of "supposition" []

• The act of supposing. (noun)
• Something supposed; an assumption. (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.

• "I started out saying "if the authors are correct in their supposition that the rate of melting has greatly increased in the last several years", IOW everything following was based on the authors '(not my) * supposition* being true."
• "Show by such reasoning that the net affect of their supposition is the end result will be the exact opposite of what they purportedly support or believe in."
• "The third element in my supposition is the speed of change."