'partially-separated' originates from the combination of 'partial' and 'separate,' where 'partial' comes from Latin 'partialis,' meaning 'pertaining to a part,' and 'separate' from Latin 'separatus,' meaning 'to divide.'

'Partial' and 'separate' were combined in modern English to form the compound adjective 'partially-separated.'

Initially, 'partial' meant 'pertaining to a part,' and 'separate' meant 'to divide.' The compound form 'partially-separated' evolved to describe something not fully divided.