From Longman Dictionary of Contemporary Englishgraduate schoolˈgraduate ˌschool noun [countable, uncountable] American EnglishSEC a college or university where you can study for a master’s degree or a doctorate after receiving your first degree, or the period of time when you study for these degrees
Examples from the Corpus
graduate school• He would also be a marvelous attraction for a graduate school of almost any-thing.• I started graduate school two days after we got married.• In the United States the graduate school is the major arena of pedagogic activity and intellectual life.• She graduated with very good grades and went on to graduate school.• I went to graduate school so I could have a career teaching literature.• I had just finished a seven-year graduate school degree. 