oxygenate vs oxygenise

oxygenate and oxygenise both are verbs.

Word	Noun	Adjective	Verb	Adverb
oxygenate	No	No	Yes	No
oxygenise	No	No	Yes	No

As verbs, oxygenate and oxygenise are synonyms defined as:

Other synonyms of oxygenate include aerate, oxygenize.

oxygenate (verb)	oxygenise (verb)
impregnate, combine, or supply with oxygen	impregnate, combine, or supply with oxygen
	dehydrogenate with oxygen
	change (a compound) by increasing the proportion of the electronegative part; or change (an element or ion) from a lower to a higher positive valence: remove one or more electrons from (an atom, ion, or molecule)