Medical Definition of cosmesis
plural cos·me·ses \-ˌsēz\play
1: preservation, restoration, or enhancement of physical appearance <café au lait macules themselves require treatment only if cosmesis is requested—D. L. Stulberg et al> <the improved hip replacement resulted in a quicker recovery and better cosmesis>
2: the outer aesthetic covering (as of silicone) of a limb prosthesis
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