isomerise vs British spelling

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

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

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

isomerise (verb)	British spelling (verb)
change into an isomer
cause to change into an isomer