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exclusive disjunction

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dis⋅junc⋅tion

[dis-juhngk-shuhn]
–noun
1. the act of disjoining or the state of being disjoined: a disjunction between thought and action.
2. Logic.
a. Also called disjunctive, inclusive disjunction. a compound proposition that is true if and only if at least one of a number of alternatives is true.
b. Also called exclusive disjunction. a compound proposition that is true if and only if one and only one of a number of alternatives is true.
c. the relation among the components of such a proposition, usually expressed by AND or V.

Origin:
1350–1400; ME disjunccioun < L disjunctiōn- (s. of disjunctiō) separation, equiv. to disjunct(us) (see disjunct ) + -iōn- -ion
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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Medical Dictionary

Main Entry: dis·junc·tion
Pronunciation: dis-'j&[ng](k)-sh&n
Function: noun
: the separation of chromosomes or chromatids duringanaphase of mitosis or meiosis
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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Medical Dictionary

disjunction dis·junc·tion (dĭs-jŭngk'shən)
n.
The separation of homologous chromosomes during meiosis.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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