Noun
xerostomia (countable and uncountable, plural xerostomias)
(medicine) Abnormal dryness of the mouth.
It is not uncommon for a dentist to see a xerostomia patient with severe, untreatable cavities in almost every tooth. Source: Internet
This treatment regimen is the same as that used for all xerostomia patients, such as those undergoing head and neck radiation therapy which often damages the salivary glands, as they are more susceptible to radiation than other body tissues. Source: Internet