Home › Words › E › exfoliationexfoliationexfoliation · noun — the scaling off of a bone, a rock, or a mineral, etc.; the state of being exfoliated.Definition from Wiktionary (CC BY-SA 3.0).EtymologyFrom Latin exfoliare (to remove leaves).nounThe scaling off of a bone, a rock, or a mineral, etc.; the state of being exfoliated.The removal of a layer of dead skin, as in cosmetic preparation.The loss of leaves from a plant.Definitions & examples from Wiktionary (CC BY-SA 3.0).