British spelling of fractionize; to separate or divide into fractions or component parts.
From fraction + -ise (British verb suffix). The -ise ending is the standard British variant of -ize (American), though both are now used interchangeably in modern British English.
Interestingly, both -ise and -ize were historically acceptable in British English, but 19th-century printers standardized -ise, creating a spelling divide that persists despite being entirely arbitrary.
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