n., pl. -thi (-thī, -thē). a fold of skin extending from the upper eyelid to or over the inner canthus of the eye, especially common in Asian peoples. Also called ep′ican′thic fold′, eyefold. [1860–65]ep`i•can′thic,adj. EncyclopediaSeeEpicanthusMedicalSeeepicanthal foldThesaurusSeeepicanthus