Definition of "deduction" []

  • The act of deducting; subtraction. (noun)
  • An amount that is or may be deducted: tax deductions. (noun)
  • The drawing of a conclusion by reasoning; the act of deducing. (noun)
  • Logic The process of reasoning in which a conclusion follows necessarily from the stated premises; inference by reasoning from the general to the specific. (noun)
  • Logic A conclusion reached by this process. (noun)
  • The act or process of deducting or subtracting (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.

  • Something, esp a sum of money, that is or may be deducted (noun)
  • The process of reasoning typical of mathematics and logic, whose conclusions follow necessarily from their premises (noun)
  • An argument of this type (noun)
  • The conclusion of such an argument (noun)
  • A systematic method of deriving conclusions that cannot be false when the premises are true, esp one amenable to formalization and study by the science of logic (noun) (c) HarperCollins Publishers Ltd 2016

Use "deduction" in a sentence
  • "Since the objective deduction is about the conditions of representations having objects, a better name for it might have been ˜deduction of the object™."
  • "The NYT article I linked to earlier discusses how the deduction is a partial cause of an overinflated residential housing market, and a real market distortion, unlike the fake ones that the libertarians on here are bleating about."
  • "You seem to be saying the deduction is a wash as between buyer and seller, because the buyer is ultimately a seller."