microdermabrasion Syllabification: (mi·cro·derm·a·bra·sion)Pronunciation: /ˌmīkrōˌdərməˈbrāZHən/Definition of microdermabrasion noun a cosmetic treatment in which the face is sprayed with exfoliant crystals to remove dead epidermal cells. microdermabrasion in other Oxford dictionaries Definition of microdermabrasion in the British & World English dictionary