phar·ma·ceu·ti·cal I. \]ə̇kəl, ]ēk-\adjective Etymology: Late Latin pharmaceuticus + English -al : of or relating to pharmacy or pharmacists • phar·ma·ceu·ti·cal·ly\-ə̇k(ə)lē, -ēk-, -li\adverb II. noun (-s) : a pharmaceutical preparation : medicinal drug