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Meaning of disjunction

dis•junc•tion

Pronunciation: (dis-jungk'shun), [key]
— n.
  1. the act of disjoining or the state of being disjoined: a disjunction between thought and action.
    1. Also calleddisjunctive,inclusive disjunction.a compound proposition that is true if and only if at least one of a number of alternatives is true.
    2. Also calledexclusive disjunction.a compound proposition that is true if and only if one and only one of a number of alternatives is true.
    3. the relation among the components of such a proposition, usually expressed by AND or V.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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