'ascarid' originates from New Latin, specifically the word 'ascaris', where the Greek 'askáris' meant 'intestinal worm'.

'ascarid' changed from the New Latin word 'ascaris' (borrowed from Greek 'askáris') and eventually became the modern English word 'ascarid'.

Initially, it meant 'intestinal worm' in general, but over time it came to refer specifically to members of the family Ascarididae (parasitic roundworms).