'bibliographical' originates from the Greek word 'biblion,' meaning 'book,' and 'graphia,' meaning 'writing.'

'biblion' and 'graphia' combined to form the Medieval Latin word 'bibliographia,' which eventually became the modern English word 'bibliographical.'

Initially, it meant 'writing about books,' but over time it evolved into its current meaning of 'relating to the history or classification of books.'