D defs.my
Entry 1 sense Webster, 1913

Exfoliation

/ĕk-sfōlˌ-ē-āsh'-ən/ · Ex·fo·li·a·tion · IPA /ɛksfˌoʊliːˈeɪʃən/
01 n. The scaling off of a bone, a rock, or a mineral, etc.; the state of being exfoliated.
  1. 1.
    The scaling off of a bone, a rock, or a mineral, etc.; the state of being exfoliated.