Definition of "formalise"

formalise

verb
third-person singular simple present formalises, present participle formalising, simple past and past participle formalised
1. (British spelling) Alternative spelling of formalize
  Quotations
  "Additionally, new part-time contracts and flexible working rosters and patterns will also encourage a more diverse workforce that can fit shifts around other commitments, while current voluntary working arrangements on Sundays will be formalised to meet rising demand for weekend travel services."
  2023 March 8, “Network News: TSSA accepts offer, but RMT sets new strike dates”, in RAIL, number 978, page 11