tur·ner·a·ce·ae \ˌtərnəˈrāsēˌē\noun plural Usage: capitalized Etymology: New Latin, from Turnera, type genus + -aceae : a family of mostly tropical American herbs or shrubs (order Parietales) having flowers with five stamens, three styles, and a free ovary • tur·ner·a·ceous\| ̷ ̷ ̷ ̷|rāshəs\adjective