Diligent inquiry or examination in seeking facts or principles; laborious or continued search after truth, systematic investigation to establish facts, An act or period of such study, intransitive verb_ To engage in or perform research, To study (something) thoroughly so as to present in a detailed, accurate manner, To do research for, transitive verb_ To search or examine with continued care; to seek diligently, To search or examine with continued care; to seek diligently, To search again, verb_ attempt to find out in a systematically and scientific manner, inquire into