lo·a·sa·ce·ae \ˌlōəˈsāsēˌē\noun plural Usage: capitalized Etymology: New Latin, from Loasa, type genus + -aceae : a family of mainly herbaceous bristly hairy sometimes climbing plants (order Parietales) having regular pentamerous flowers with numerous stamens • lo·a·sa·ceous\| ̷ ̷ ̷ ̷|sāshəs\adjective