1. (of a material) come apart or be shed from a surface in scales or layers: "the bark exfoliates in papery flakes"
▪ cause (a surface) to shed material in scales or layers: "salt solutions exfoliate rocks on evaporating"
▪ wash or rub (a part of the body) with a granular substance to remove dead cells from the surface of the skin: "exfoliate your legs to get rid of dead skin"
▪ shed (material) in scales or layers:"diagnosing cancer from cells exfoliated into the intestine"
Word Originmid 17th century: from late Latin exfoliat- ‘stripped of leaves’, from the verb exfoliare, from ex- ‘out, from’ + folium ‘leaf’.