Noun

The act of excluding or shutting out; removal from consideration or taking part.

* {{quote-news

, year=2011 , date=September 2 , author=Phil McNulty , title=Bulgaria 0-3 England , work=BBC citation , page= , passage=It was also a satisfying night for England coach Capello. Not only did he have a vital victory to celebrate, but his team selection was fully justified as Cahill gave an almost flawless performance in defence and Scott Parker's display made light of the surprising exclusion of Frank Lampard.}}

(obsolete) The act of pushing or forcing something out.

* 1646 , Sir Thomas Browne, Pseudodoxia Epidemica , III.6:

For the exclusion of animals is not merely passive like that of eggs, nor the total action of delivery to be imputed unto the mother, but the first attempt beginneth from the infant [...].

An item not covered by an insurance policy.

Noun

(en noun)

The setting apart or separation of things or people, as a natural process, a manner of organizing people that may be voluntary or enforced by law.

(rfc-sense) (biology) The Mendelian Law of Segregation related to genetic transmission or geographical segregation of various species.

(mineralogy) Separation]] from a mass, and gathering about centers or into cavities at hand through cohesive or adhesive attraction or the [[crystallize, crystallizing process.

(politics, public policy) The separation of people (geographically, residentially, or in businesses, public transit, etc) into racial or other categories (e.g. religion, sex).

(sociology) The separation of people (geographically, residentially, or in businesses, public transit, etc) into various categories which occurs due to social forces (culture, etc).