lyophilise vs lyophilize

lyophilise and lyophilize both are verbs.

Word	Noun	Adjective	Verb	Adverb
lyophilise	No	No	Yes	No
lyophilize	No	No	Yes	No

As verbs, lyophilise and lyophilize are synonyms defined as:

lyophilise and lyophilize: to dry (blood, serum, or tissue) by freezing in a high vacuum

lyophilise (verb)	lyophilize (verb)
to dry (blood, serum, or tissue) by freezing in a high vacuum	to dry (blood, serum, or tissue) by freezing in a high vacuum