The word 'larvae-inhibiting' is a compound formed from 'larvae' (the plural of 'larva', from Latin 'larva' meaning 'ghost, mask') and 'inhibiting' (from Latin 'inhibere', meaning 'to hold in, restrain').

'Larvae-inhibiting' is a modern English compound, created by combining the noun 'larvae' and the present participle 'inhibiting' to describe substances or actions that prevent larvae development.

Initially, the components meant 'larvae' and 'restraining', and together they now specifically refer to preventing the development or growth of larvae.