'anamorphous' originates from Greek, specifically the word 'anamorphōsis,' where 'ana-' meant 'again' or 'back' and 'morphē' meant 'form' or 'shape.'

'anamorphōsis' was adopted into scientific Latin as 'anamorphosis,' and eventually became the English word 'anamorphous.'

Initially, it meant 'having a changed or distorted form,' and over time it evolved into its current meaning of 'having an irregular or undefined shape.'