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cos·me·sis | \ käz-ˈmē-səs 
\
\ plural cosmeses\ -ˌsēz \
\Medical Definition of cosmesis
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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