GMAT Vocabulary Flash Cards @ englishpdf.com and englishteststore.com File 176 derive (v) To deduce, as from a premise dermatology (n) The branch of medical science which relates to the skin and its diseases derogatory (adj) belittling; uncomplimentary derrick (n) An apparatus for hoisting and swinging great weights descant (v) lengthy talking or writing descendant (n) One who is descended lineally from another, as a child, grandchild, etc descendent (adj) Proceeding downward descent (n) The act of moving or going downward