chae·top·o·da \kēˈtäpədə\noun plural Usage: capitalized Etymology: New Latin, from chaet- + -poda in many classifications: a major division (usually a class) of annelid worms containing the Polychaeta and Oligochaeta as subdivisions • chae·top·o·dan\-dən, -dən\adjective • chae·top·o·dous\-dəs\adjective