n. Knowledge;comprehension or understanding of facts or principles.n. Knowledge gained by systematic observation, experiment, and reasoning; knowledge coördinated, arranged, and systematized; also, the prosecution of truth as thus known, both in the abstract and as a historical development.n. Knowledge regarding any special group of objects, coördinated, arranged, and systematized; what is known concerning a subject, systematically arranged; a branch of knowledge: as, the science of botany, of astronomy, of etymology, of metaphysics; mental science; physical science; in a narrow sense, one of the physical sciences, as distinguished from mathematics, metaphysics, etc.n. Art derived from precepts or based on principles; skill resulting from training; special, exceptional, or preëminent skill.n. Trade; occupation.n. Synonyms and Art, Science. See art.n. A so-called system of healing, which aims at a cnre of all physical ailments by educating the mind of the patient in certain directions. The mind is supposed to be trained to exclnde every idea of the existence of any real discomfort, on the ground that all such discomfort is the result of abnormal mental conditions; the mind being properly trained to ignore the body, no discomfort exists, since the mind does not admit it. The system has many variations, but in general is, evidently, a form of mind-cure or faith-cure.