'nonhaemolytic' originates from English, specifically the prefix 'non-' meaning 'not' combined with 'haemolytic', which itself comes from Greek elements 'haima' meaning 'blood' and 'lysis' meaning 'loosening' or 'destruction'.

'haemolytic' traces back to Greek 'haima' + 'lysis', entered scientific Neo-Latin as 'haemolysis' and then formed the English adjective 'haemolytic'; the negative form 'nonhaemolytic' was created by prefixing 'non-'.

Initially, the root referred to the breaking down or destruction of blood (red blood cells); over time 'haemolytic' came to mean 'causing haemolysis', and 'nonhaemolytic' now means 'not causing haemolysis'.