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The Collaborative International Dictionary of English v.0.48 (gcide)

Exfoliate \Ex*fo"li*ate\ v. t.
To remove scales, lamin[ae], or splinters from the surface
of.
[1913 Webster]


Exfoliate \Ex*fo"li*ate\, v. i. [imp. & p. p. {Exfoliated}; p.
pr. & vb. n. {Exfoliating}.] [L. exfoliare to strip of
leaves; ex out, from folium leaf.]
1. To separate and come off in scales or lamin[ae], as pieces
of carious bone or of bark.
[1913 Webster]

2. (Min.) To split into scales, especially to become
converted into scales at the result of heat or
decomposition.
[1913 Webster]