'geocentric' originates from Greek, specifically the word 'geōkentrikos,' where 'geo-' meant 'earth' and 'kentrikos' meant 'centered.'

'geōkentrikos' transformed into the Latin word 'geocentricus,' and eventually became the modern English word 'geocentric.'

Initially, it meant 'centered on the Earth,' and this meaning has largely remained the same in modern usage.