Threadworm/ˈθredwɜːrm/ Definition 1 of 1Pro Tip 1/3Common Affliction Threadworm is often mentioned in the context of common childhood illnesses. Many schools circulate notices about threadworm to educate parents. Pro Tip 2/3Medical Context Used mostly in medical or health discussions, rarely in casual conversation. The doctor asked about symptoms of threadworm during the check-up. Pro Tip 3/3Hygiene Related Threadworm discussions often involve topics of personal hygiene or cleanliness. Washing hands regularly helps prevent threadworm infection.