deduce

Definition from Wiktionary, the free dictionary
Jump to: navigation, search

English[edit]

Etymology[edit]

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

Pronunciation[edit]

Verb[edit]

deduce (third-person singular simple present deduces, present participle deducing, simple past and past participle deduced)

  1. (transitive) To reach a conclusion by applying rules of logic to given premises.
    • Alexander Pope
      O goddess, say, shall I deduce my rhymes / From the dire nation in its early times?
    • John Locke
      Reasoning is nothing but the faculty of deducing unknown truths from principles already known.
    • Sir Walter Scott
      See what regard will be paid to the pedigree which deduces your descent from kings and conquerors.
  2. (obsolete) To take away; to deduct; to subtract.
    to deduce a part from the whole
    (Can we find and add a quotation of Ben Jonson to this entry?)
  3. (obsolete, Latinism) To lead forth.
    • Selden
      He should hither deduce a colony.

Usage notes[edit]

For example, from the premises "all good people believe in the tooth fairy" and "Jimmy does not believe in the tooth fairy", we deduce the conclusion "Jimmy 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 a false premise.

Antonyms[edit]

  • (reach a conclusion by applying rules of logic): induce

Synonyms[edit]

  • (reach a conclusion by applying rules of logic): conclude, infer

Translations[edit]

Related terms[edit]

Anagrams[edit]


Italian[edit]

Verb[edit]

deduce

  1. Third-person singular indicative present of dedurre.

Latin[edit]

Verb[edit]

dēdūce

  1. second-person singular present active imperative of dēdūcō

Romanian[edit]

Etymology[edit]

Borrowed from Latin deducere, French déduire.

Verb[edit]

a deduce (third-person singular present deduce, past participle dedus3rd conj.

  1. (transitive) to infer, deduce (to conclude by reasoning or deduction, as from premises or evidence)

Spanish[edit]

Verb[edit]

deduce

  1. Informal second-person singular () affirmative imperative form of deducir.
  2. Formal second-person singular (usted) present indicative form of deducir.
  3. Third-person singular (él, ella, also used with usted?) present indicative form of deducir.