| Noun | 1. | subfamily Petauristidae - Old World flying squirrels mammal family - a family of mammals family Sciuridae, Sciuridae - a mammal family of true squirrels including: ground squirrels; marmots; chipmunks; flying squirrels; spermophiles Asiatic flying squirrel - nocturnal rodent of Asia having furry folds of skin between forelegs and hind legs enabling it to move by gliding leaps genus Petaurista, Petaurista - very large Asiatic flying squirrels |