Main Entry:

de·duc·tion

Pronunciation:

\di-ˈdək-shən, dē-\

Function:

noun

Date:

15th century

1 a: an act of taking away <deduction of legitimate business expenses> b: something that is or may be subtracted <deductions from his taxable income>2 a: the deriving of a conclusion by reasoning ; specifically : inference in which the conclusion about particulars follows necessarily from general or universal premises — compare induction b: a conclusion reached by logical deduction