'female-biased' originates from Modern English, composed of 'female' and 'biased', where 'female' ultimately comes from Latin 'femina' via Old French 'femelle' and Middle English 'femele' meaning 'woman', and 'biased' derives from the noun 'bias' (Old Provençal 'biais') with the suffix '-ed' forming an adjective meaning 'having a bias'.

'female' changed from Latin 'femina' to Old French 'femelle' to Middle English 'femele' and eventually became the modern English word 'female'. 'bias' came from Old Provençal 'biais' into Middle English 'bias', and 'biased' formed by adding the adjectival/past participle suffix '-ed' to 'bias'.

Initially, 'female' meant 'woman' and 'bias' meant 'a slant or inclination'; over time the compound 'female-biased' came to mean 'displaying a preference in favor of females'.