TABLE 1.

Definition of terms used for characterization of oral pre-cancer disorders.

Terms	Definition
Oral precancerous lesion	A morphologically altered tissue that has greater potential to cause malignancy than the corresponding normal counterpart does George et al. (2011), Sarode et al. (2014)
Oral precancerous conditions	A generalized condition that does not necessarily show clinical alteration of oral mucosa but is associated with a significantly increased risk of cancer development George et al. (2011), Sarode et al. (2014)
OPMDs	Any clinical presentations that carry a high risk of cancer development in the oral cavity, whether in a clinically definable precursor lesion or in clinically normal mucosa Warnakulasuriya et al. (2020b)