Noun
leukoplakia (countable and uncountable, plural leukoplakias)
English Wikipedia has an article on:leukoplakiaWikipedia
(medicine) Patches of keratosis on the mucous membranes of the oral cavity and in other areas, associated with smoking.
However, its use is strongly associated with development of leukoplakia (a white patch in the mouth), usually in the buccal sulcus. Source: Internet
This type of leukoplakia has been termed "sanguinaria-associated keratosis" and more than 80% of people with leukoplakia in the vestibule of the mouth have used this substance. Source: Internet