pressurise vs British spelling

pressurise is not a noun while British spelling is a noun.

Word	Noun	Adjective	Verb	Adverb
pressurise	No	No	Yes	No
British spelling	Yes	No	No	No

pressurise (noun)	British spelling (noun)
	English orthography used in the UK, Ireland and most of the Commonwealth (characterized by 'analyse', 'centre' and 'useable')

pressurise (verb)	British spelling (verb)
increase the pressure in or of
maintain a certain pressure
increase the pressure on a gas or liquid