eu·tracheata \(|)yü+\noun plural Usage: capitalized Etymology: New Latin, from eu- + Tracheata : a group of Arthropoda comprising all arthropods (as insects, chilopods, diplopods, and a few related forms) that have a tracheal respiratory system and a single pair of antennae • eu·tracheate\(ˈ)yü+\adjective or noun