'conventionally-separated' originates from the combination of 'conventionally' and 'separated', where 'conventionally' is derived from 'convention', meaning 'a way in which something is usually done', and 'separated' from 'separate', meaning 'to set or keep apart'.

'conventionally' evolved from the Latin word 'conventio', and 'separated' from the Latin word 'separatus'.

Initially, 'conventionally' meant 'according to agreement', and 'separated' meant 'to divide'. Over time, the phrase 'conventionally-separated' came to mean 'divided according to established norms'.