Deduction De*duc"tion, n. [L. deductio: cf. F. d['e]duction.] 1. Act or process of deducing or inferring. [1913 Webster]

The deduction of one language from another. --Johnson. [1913 Webster]

This process, by which from two statements we deduce a third, is called deduction. --J. R. Seely. [1913 Webster]

2. Act of deducting or taking away; subtraction; as, the deduction of the subtrahend from the minuend. [1913 Webster]

3. That which is deduced or drawn from premises by a process of reasoning; an inference; a conclusion. [1913 Webster]

Make fair deductions; see to what they mount. --Pope. [1913 Webster]

4. That which is or may be deducted; the part taken away; abatement; as, a deduction from the yearly rent in compensation for services; deductions from income in calculating income taxes.

Syn: See {Induction}. [1913 Webster]

The Collaborative International Dictionary of English. 2000.