hyposalivation /-sal′ivā″shən/ [Gk, hypo + L, saliva, spittle] , a decreased flow of saliva associated with dehydration; radiation therapy of the salivary gland regions; anxiety; menopause; the use of drugs such as atropine, glycopyrrolate, and antihistamines; vitamin deficiency; inflammation or infection of the salivary glands; or various syndromes, such as Plummer-Vinson syndrome. Also called asialorrhea. See also xerostomia.