der‧ma‧tol‧o‧gy /ˌdɜːməˈtɒlədʒi $ ˌdɜːrməˈtɑː-/
noun [uncountable][
Date: 1800-1900;
Language: Greek;
Origin: derma 'skin']
the part of medical science that deals with skin diseases and their treatment
—dermatologist noun [countable] [TahlilGaran] Dictionary of Contemporary English ▲