British spelling of utilization, meaning the action of making practical use of something or finding a profitable purpose for it. The process of employing resources effectively.
From French utilisation, derived from utiliser 'to use', ultimately from Latin utilis meaning 'useful'. The '-isation' ending reflects British spelling conventions, while American English uses '-ization'.
The difference between 'utilisation' and 'utilization' is a perfect example of how American and British English diverged after independence - Americans simplified spellings while Britons maintained French-influenced forms! It's the same linguistic split that gave us 'colour/color' and 'centre/center'.
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