'non-traumatic' originates from the prefix 'non-' meaning 'not' and the word 'traumatic' which comes from the Greek word 'trauma' meaning 'wound'.

'trauma' transformed into the English word 'traumatic', and the prefix 'non-' was added to form 'non-traumatic'.

Initially, 'trauma' meant 'wound', but over time, 'traumatic' evolved to mean 'causing emotional or physical injury', and 'non-traumatic' to mean 'not causing such injury'.