'normally-separated' originates from the combination of 'normal' and 'separate,' where 'normal' meant 'usual or typical' and 'separate' meant 'to divide or keep apart.'

'normally-separated' evolved from the individual words 'normal' and 'separate,' which were combined to describe a state of being typically divided.

Initially, it meant 'usually divided,' and this meaning has largely remained the same in modern usage.