Retinol and Retin-A are essentially the same, except retinol is exclusively an over-the-counter solution. Both products are retinoids designed to promote skin cell rejuvenation, according to WebMD.
Full Definition of UNDERGRADUATE. : a student at a college or university who has not received a first and especially a bachelor's degree. â undergraduate adjective.See undergraduate defined for English-language learners. See undergraduate defined for kids.ull Definition of UNDERGRADUATE. : a student at a college or university who has not received a first and especially a bachelor's degree. â undergraduate adjective. See undergraduate defined for English-language learners.
student (plural students) A person who studies or learns about a particular academic subject. A student of philosophy. (figuratively) A person seriously devoted to some subject, whether academic or not. He is a student of life. A person enrolled at a university. The students were out raising funds for rag week.