photosensitize vs photosensitise

photosensitize and photosensitise both are verbs.

Word	Noun	Adjective	Verb	Adverb
photosensitize	No	No	Yes	No
photosensitise	No	No	Yes	No

As verbs, photosensitize and photosensitise are synonyms defined as:

photosensitize and photosensitise: make (an organism or substance) sensitive to the influence of radiant energy and especially light

photosensitize (verb)	photosensitise (verb)
make (an organism or substance) sensitive to the influence of radiant energy and especially light	make (an organism or substance) sensitive to the influence of radiant energy and especially light