excluˈsory adjective

Acting or tending to exclude

excluded employee noun

One who is not qualified to make a claim under certain employment legislation, eg one who has reached retirement age

exclusion clause noun

A contractual term or other notice which attempts to exclude a person from liability which would otherwise arise, eg certain risks being excluded from an insurance policy

exclusion order noun

An order prohibiting the presence in, or entry to, Britain of any person known to be concerned in acts of terrorism

exclusion principle or Pauli exclusion principle /powˈli/ noun (physics)

A fundamental law of quantum mechanics that no two particles of a group called fermions can exist in identical quantum states ie have the same set of quantum numbers (this constraint explains the electronic structure of atoms and also the general nature of the periodic table)

exclusion zone noun

A zone into which entry is forbidden, esp by ships or aircraft belonging to particular nations

Exclusive Brethren see Close Brethren under close¹

exclusive dealing noun

1. The act of abstaining deliberately from any business or other transactions with people of opposite political or other convictions to one's own
2. Boycotting (euphemistic)

exclusive reckoning noun

The usual modern method of counting, in which either the first or the last term is counted, but not both (cf inclusive reckoning)

exclusive zone or exclusive economic zone noun

Territorial waters within a certain limit in which foreign exploitation is totally banned

law (or principle) of excluded middle (logic)

The principle that everything is either true or false

to the exclusion of

So as to exclude