'actinography' originates from Greek, specifically the word 'aktinos,' where 'aktin-' meant 'ray' and 'graphy' meant 'writing or recording.'

'aktinos' transformed into the English word 'actinography' through the combination of 'actino-' and '-graphy,' eventually becoming the modern English word 'actinography.'

Initially, it meant 'recording of rays,' but over time it evolved into its current meaning of 'recording the intensity and distribution of radiation.'