Concerned with the acquisition of accurate and systematic knowledge of principles by observation and deduction: as, scientific investigation.Of or pertaining to, treating of, or used in science: as, scientific works; scientific instruments; scientific nomenclature.Versed in science; guided by the principles of science, and not by empiricism or mere quackery; hence, learned; skilful: as, a scientific physician.According to the rules or principles of science; hence, systematic; accurate; nice: as, a scientific arrangement of fossils.