ˌplad.ēˈstərnəˌdē noun plural
Usage: capitalized
Etymology: New Latin, from Platysternon, genus name of Platysternon megacephalum (from platy- + Greek sternon chest, breast) + -idae — more at sternum
: a family of Asiatic freshwater turtles (suborder Cryptodira) including a single species ( Platysternon megacephalum ) characterized by a relatively huge head with hooked mandibles and a very long tail