gracility
gracileness

Gracility is slenderness, the condition of being gracile, which means slender.

The origins of many recently adapted genes have now been traced to this period, creating effects such as regional differences in skin colour and skeletal gracility.

The genus name is derived from Manchu ge ge, the title of a princess, in reference to the dainty gracility of the specimen, and a Latinised Greek pteron, "wing".