Conjunctive Normal Form (logic) (CNF) A logical formula consisting of a conjunction of disjunctions of terms where no disjunction contains a conjunction. Such a formula might also be described as a product of sums. E.g. the CNF of
(A and B) or C
is (A or C) and (B or C).
Contrast Disjunctive Normal Form. Last updated: 1995-12-10
