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. And none but such, from mercy I exclude. Milton.
2. To thrust out or eject; to expel; as, to exclude young animals from the womb or from eggs. 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.
EXCLUSION
Ex*clu"sion, n. Etym: [L. exclusio: cf. F. exclusion. See Exclude.]
1. The act of excluding, or of shutting out, whether by thrusting out or by preventing admission; a debarring; rejection; prohibition; the state of being excluded. His sad exclusion from the doors of bliss. Milton. The exclusion of the duke from the crown of England and Ireland. Hume.
2. (Physiol.)
Defn: The act of expelling or ejecting a fetus or an egg from the womb.
3. Thing emitted. Sir T. Browne.
EXCLUSIONARY
Ex*clu"sion*a*ry, a.
Defn: Tending to exclude; causing exclusion; exclusive.
EXCLUSIONISM
Ex*clu"sion*ism, n.