British spelling of formularize; to reduce something to a formula or express it in a systematic, rule-based way.
British variant using '-ise' ending instead of '-ize.' Both come from 'formula' + the suffix, but British English preserves the older '-ise' spelling from French influence.
The British '-ise' versus American '-ize' split happened because American English rejected French-influenced spellings after independence, creating two formularized spelling systems from one root.
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