ˌlēən.tīəsə̇s noun
( plural leontia·ses -əˌsēz)
Etymology: New Latin, from Greek leontiasis early stage of elephantiasis, from leont-, leōn lion + -iasis
1. : leprosy affecting the flesh of the face and giving it a leonine appearance
2. or leontiasis ossea : an overgrowth of the bones in the head producing enlargement and distortion of the face