'aviatrix' (plural 'aviatrices') originates from Latin, specifically the word 'avis' meaning 'bird' and the feminine agent suffix '-trix'.

'aviatrix' was formed in English from Latin/Neo-Latin formations (contrast with 'aviator'); the feminine form '-trix' was added to the Latin root and the plural became 'aviatrices' in English usage.

Initially based on Latin elements meaning 'bird' plus a feminine agent ending, the word came to mean specifically 'a female pilot' in modern use.