Definition of "valuation"
valuation
/ˌvæ.ljuːˈeɪ.ʃən/
noun
countable and uncountable, plural valuations
(logic, propositional logic, model theory) An assignment of truth values to propositional variables, with a corresponding assignment of truth values to all propositional formulas with those variables (obtained through the recursive application of truth-valued functions corresponding to the logical connectives making up those formulas).