AskDefine | Define deduce

Dictionary Definition



1 reason by deduction; establish by deduction [syn: infer, deduct, derive]
2 conclude by reasoning; in logic [syn: infer]

User Contributed Dictionary



From deducere, "lead from or concerning", from de-, "of" or "concerning", ducere, "lead".



  1. In the context of "intransitive|followed by that": To reach a conclusion by applying rules of logic to given premises.

Usage notes

For example, from the premises "all good people believe in the tooth fairy" and "Mary does not believe in the tooth fairy", we deduce the conclusion "Mary is not a good person". This particular form of deduction is called a syllogism. Note that in this case we reach a false conclusion by correct deduction from false premises.



to deduce

Verb form

  1. Third-person singular indicative present of dedurre.

Synonyms, Antonyms and Related Words

analyze, apply reason, arouse, assume, be afraid, believe, bring forth, bring out, bring to light, call forth, call out, call up, cogitate, collect, conceive, conclude, consider, daresay, deduct, deem, derive, divine, drag out, draw, draw a conclusion, draw an inference, draw forth, draw out, dream, educe, elicit, evoke, expect, extract, fancy, feel, fetch, find, gather, generalize, get from, get out of, glean, grant, hypothesize, imagine, induce, infer, intellectualize, judge, let, let be, logicalize, logicize, make, make out, obtain, opine, philosophize, prefigure, presume, presuppose, presurmise, procure, provide a rationale, provisionally accept, rationalize, read into, reason, reason that, reckon, regard, repute, rouse, say, secure, stimulate, summon forth, summon up, suppose, surmise, suspect, syllogize, synthesize, take, take as proved, take for, take for granted, take it, take to be, take to mean, theorize, think, understand, use reason, wangle, wangle out of, winkle out, work out, worm out, worm out of
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