scientific

Of, relating to, or employing the methodology of science.

Concerned with the acquisition of accurate and systematic knowledge of principles by observation and deduction.

Of or pertaining to, treating of, or used in science.

Versed in science; guided by the principles of science, and not by empiricism or mere quackery; hence, learned; skilful.

According to the rules or principles of science; hence, systematic; accurate; nice.