'cytological' originates from the Greek word 'kytos,' meaning 'container' or 'cell,' combined with 'logos,' meaning 'study' or 'discourse.'

'kytos' transformed into the modern English word 'cyto-' as a prefix, and 'logos' became '-logy,' forming 'cytology,' which then evolved into 'cytological.'

Initially, it meant 'study of cells,' and this meaning has largely remained the same in modern usage.