Excluded middle

Excluded middle
Exclude Ex*clude", v. t. [imp. & p. p. {Excluded}; p. pr. & vb. n. {Excluding}.] [L. excludere, exclusum; ex out + claudere to shut. See {Close}.] 1. To shut out; to hinder from entrance or admission; to debar from participation or enjoyment; to deprive of; to except; -- the opposite to admit; as, to exclude a crowd from a room or house; to exclude the light; to exclude one nation from the ports of another; to exclude a taxpayer from the privilege of voting. [1913 Webster]

And none but such, from mercy I exclude. --Milton. [1913 Webster]

2. To thrust out or eject; to expel; as, to exclude young animals from the womb or from eggs. [1913 Webster]

{Excluded middle}. (logic) The name given to the third of the ``three logical axioms,'' so-called, namely, to that one which is expressed by the formula: ``Everything is either A or Not-A.'' no third state or condition being involved or allowed. See {Principle of contradiction}, under {Contradiction}. [1913 Webster]


The Collaborative International Dictionary of English. 2000.

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