(1):
(a.) Having a knowledge of science, or of a science; evincing science or systematic knowledge; as, a scientific chemist; a scientific reasoner; a scientific argument.
(2):
(a.) Agreeing with, or depending on, the rules or principles of science; as, a scientific classification; a scientific arrangement of fossils.
(3):
(a.) Of or pertaining to science; used in science; as, scientific principles; scientific apparatus; scientific observations.