chae·toph·o·ra·ce·ae \ ̷ ̷ˌ ̷ ̷əˈrāsēˌē\noun plural Usage: capitalized Etymology: New Latin, from Chaetophora, type genus + -aceae : a large family of widely distributed green algae (order Ulotrichales) — see chaetophorales • chae·toph·o·ra·ceous\ ̷ ̷| ̷ ̷ ̷ ̷| ̷ ̷shəs\adjective