# modal logic

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## modal logic

*n*

**1.**(Logic) the logical study of such philosophical concepts as necessity, possibility, contingency, etc

**2.**(Logic) the logical study of concepts whose formal properties resemble certain moral, epistemological, and psychological concepts. See also alethic, deontic, epistemic, doxastic

**3.**(Logic) any formal system capable of being interpreted as a model for the behaviour of such concepts

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Noun | 1. | modal logic - the logical study of necessity and possibilitylogic - the branch of philosophy that analyzes inference |

2. | modal logic - a system of logic whose formal properties resemble certain moral and epistemological conceptsformal logic, mathematical logic, symbolic logic - any logical system that abstracts the form of statements away from their content in order to establish abstract criteria of consistency and validity alethic logic - the modal logic of necessity and possibility and contingency deontic logic - the modal logic of obligation and permissibility epistemic logic - the modal logic of knowledge and uncertainty and ignorance doxastic logic - the modal logic of belief and disbelief |

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