er·i·o·cau·la·ce·ae \-ōˌkȯˈlāsēˌē\noun plural Usage: capitalized Etymology: New Latin, from Eriocaulon, type genus + -aceae : a family of chiefly tropical monocotyledonous aquatic or bog herbs (order Xyridales) having clustered or tufted linear leaves and minute flowers in dense heads • er·i·o·cau·la·ceous\| ̷ ̷ ̷ ̷ ̷ ̷| ̷ ̷| ̷ ̷shəs\adjective