'ascaridia' originates from New Latin, specifically the word 'Ascaridia', where Greek 'askaris' meant 'intestinal worm'.

'ascaridia' changed from the Greek word 'askaris' to the Latin form 'ascaris' and later appeared in New Latin as 'Ascaridia', eventually entering modern English as 'ascaridia'.

Initially, it referred generally to an 'intestinal worm'; over time it became the scientific name for a genus of nematodes infecting birds and is now used in that narrow taxonomic sense.