'efficiently-partitioned' originates from the combination of 'efficiently' and 'partitioned', where 'efficiently' comes from Latin 'efficientem', meaning 'accomplishing', and 'partitioned' from Latin 'partitionem', meaning 'a division'.

'efficiently' evolved from the Latin 'efficientem' through Old French 'efficient', and 'partitioned' from Latin 'partitionem' through Old French 'particion'.

Initially, 'efficiently' meant 'accomplishing', and 'partitioned' meant 'a division'. Over time, they combined to describe a state of being divided in a way that maximizes efficiency.