<logic> A truth function that is true when one or the other of its components (called disjuncts) is true, and false otherwise. Also the connective denoting this function; also the compound proposition built from this connective.
One or the other of the disjuncts is true, but not both. Notation: no standard symbol, but the concept is accurately captured thus: p /<=> q (negation of material equivalence). Inclusive disjunction
One or the other or both of the disjuncts is true. Notation: p v q.
[Glossary of First-Order Logic]
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