Definition of decidable
: capable of being decided; specifically : capable of being decided as following or not following from the axioms of a logical system <Was logic complete … ? And was it decidable, in the sense that there was a method that demonstrated the truth or falsity of every statement? — Stan Augarten> <By the beginning of this century symbolic logic had progressed to such an extent that the German mathematician David Hilbert declared that all mathematical questions are in principle decidable … — Gregory J. Chaitin>
decidabilityplay \di-ˌsī-də-ˈbi-lə-tē\ noun
First Known Use of decidable
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