'prematurely-delivered' originates from the Latin word 'praematurus,' where 'prae-' meant 'before' and 'maturus' meant 'ripe or mature.'

'praematurus' transformed into the Old French word 'premature,' and eventually became the modern English word 'prematurely' combined with 'delivered.'

Initially, it meant 'before maturity,' but over time it evolved into its current meaning of 'born or delivered before the expected time.'