'elsewhere' originates from Old English, specifically the word 'elles hwǣr', where 'elles' meant 'otherwise' and 'hwǣr' meant 'where'.

'elles hwǣr' transformed into the Middle English word 'elleswher', and eventually became the modern English word 'elsewhere'.

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