'standardly-separated' originates from the combination of 'standardly' and 'separated', where 'standardly' implies 'according to a standard' and 'separated' means 'divided or set apart'.

The term 'standardly-separated' evolved from the need to describe processes or items that are divided according to a specific standard or norm.

Initially, it meant 'divided according to a standard', and this meaning has largely remained the same in modern usage.