‘Ah, zis is for my experiment,’ said Otto proudly. ‘You know zat another term for an iconographer would be “photographer”? From the old word photus in Latation, vhich means—’
‘“To prance around like a pillock ordering everyone about as if you owned the place”,’ said William.
‘Ah, you know it!’
William nodded. He’d always wondered about that word.

Pratchett, Terry. The Truth: (Discworld Novel 25) (Discworld series)