'female-isation' originates from English, specifically the word 'female' combined with the suffix '-isation' (from French '-isation'), where 'female' originally comes from Old French 'femele' meaning 'woman' and the suffix '-isation' marks a process or action.

'female-isation' was formed in modern English by compounding 'female' and the suffix '-isation', modelled on similar formations such as 'feminisation' and 'masculinisation'; the suffix itself comes from French '-isation', ultimately from Latin-based verb-forming elements.

Initially the component 'female' referred simply to 'woman' or 'female', and the compounded form came to mean 'the process of making female' or 'becoming female'; over time it has been used more broadly to mean 'making something more feminine' as well as literal conversion.