noun, plural no·mas. Pathology.
- a gangrenous ulceration of the mouth or genitalia, occurring mainly in debilitated children.
- a gangrenous inflammation of the mouth, esp one affecting malnourished children
- A severe, often gangrenous inflammation of the lips and cheek or of the female genitals that often occurs following an infectious disease and is found most often in children in poor hygienic or malnourished condition.stomatonecrosis