scientist

A person who is engaged in and has expert knowledge of a science, especially a biological or physical science.

A person versed in or devoted to science; a man of science; a savant.

One learned in science; a scientific investigator; one devoted to scientific study; a savant.

One whose activities make use of the scientific method to answer questions regarding the measurable universe. A scientist may be involved in original research, or make use of the results of the research of others.

a person with advanced knowledge of one or more sciences