strig·i·dae \ˈstrijəˌdē\noun plural Usage: capitalized Etymology: New Latin, from Strig-, Strix type genus + -idae : a family of birds (order Strigiformes): a.in former classifications: a family coextensive with Strigiformes b.in some especially former classifications: a family equivalent to Tytonidae c.: a family comprising all the owls except the barn owls — compare tytonidae; see bubonidae