law of contradiction


law of contradiction
the law that a proposition cannot be both true and false or that a thing cannot both have and not have a given property.

* * *


Universalium. 2010.

Look at other dictionaries:

  • law of contradiction — a principle in logic: a thing cannot at the same time both be and not be of a specified kind (as a table and not a table) or in a specified manner (as red or not red) * * * Logic. the law that a proposition cannot be both true and false or that a …   Useful english dictionary

  • law of contradiction — noun the law which asserts that a proposition cannot at the same time be both true and false, or alternatively that a thing cannot at the same time both have and not have a given property …   Australian English dictionary

  • contradiction — I noun adverseness, antipathy, antithesis, assertion of the contrary, assertion of the opposite, conflict, conflicting evidence, confutation, contradistinction, contraindication, contraposition, contraries, contrariety, contrariness, contrary… …   Law dictionary

  • contradiction of terms — index non sequitur Burton s Legal Thesaurus. William C. Burton. 2006 …   Law dictionary

  • Law of excluded middle — This article uses forms of logical notation. For a concise description of the symbols used in this notation, see Table of logic symbols. In logic, the law of the excluded middle states that the propositional calculus formula P ∨ ¬ P ( P or not P… …   Wikipedia

  • law of thought — any of several principles in logic: a. : law of contradiction b. : law of excluded middle c. : law of identity * * * any of the three basic laws of traditional logic: the law of contradiction …   Useful english dictionary

  • law of thought — any of the three basic laws of traditional logic: the law of contradiction, the law of excluded middle, and the law of identity. * * * …   Universalium

  • contradiction — /kɒntrəˈdɪkʃən/ (say kontruh dikshuhn) noun 1. the act of contradicting; gainsaying or opposition. 2. assertion of the contrary or opposite; denial. 3. a statement or proposition that contradicts or denies another or itself. 4. direct opposition… …   Australian English dictionary

  • law of the excluded middle — Contradiction Con tra*dic tion, n. [L. contradictio answer, objection: cf. F. contradiction.] 1. An assertion of the contrary to what has been said or affirmed; denial of the truth of a statement or assertion; contrary declaration; gainsaying.… …   The Collaborative International Dictionary of English

  • Contradiction — Con tra*dic tion, n. [L. contradictio answer, objection: cf. F. contradiction.] 1. An assertion of the contrary to what has been said or affirmed; denial of the truth of a statement or assertion; contrary declaration; gainsaying. [1913 Webster]… …   The Collaborative International Dictionary of English


Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”

We are using cookies for the best presentation of our site. Continuing to use this site, you agree with this.