exfoliate
vt., vi.
3at#ed, 3at#ing 5< LL exfoliatus, pp. of exfoliare, to strip of leaves < L ex3, out + folium, a leaf: see FOIL26 to cast or come off in flakes, scales, or layers, as skin, bark, rock, etc.
exfoliation
n.
ex[fo4li[a#tive
adj.