empiric

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun One who is guided by practical experience rather than precepts or theory.
• noun An unqualified or dishonest practitioner; a charlatan.
• adjective Empirical.

from The Century Dictionary.

• Same as empirical.
• Versed in physical experimentation: as, an empiric alchemist.
• Of or pertaining to the medical empirics.
• noun One of an ancient sect of Greek physicians who maintained that practice or experience, and not theory, is the foundation of the science of medicine.
• noun An experimenter in medical practice, destitute of adequate knowledge; an irregular or unscientific physician; more distinctively, a quack or charlatan.
• noun In general, one who depends mainly upon experience or intuition; one whose procedure in any field of action or inquiry is too exclusively empirical.
• noun = Syn.2. Mountebank, etc. See quack, n.

from the GNU version of the Collaborative International Dictionary of English.

• noun One who follows an empirical method; one who relies upon practical experience.
• noun One who confines himself to applying the results of mere experience or his own observation; especially, in medicine, one who deviates from the rules of science and regular practice; an ignorant and unlicensed pretender; a quack; a charlatan.
• adjective Pertaining to, or founded upon, experiment or experience; depending upon the observation of phenomena; versed in experiments.
• adjective Depending upon experience or observation alone, without due regard to science and theory; -- said especially of medical practice, remedies, etc.; wanting in science and deep insight.
• adjective (Chem.) See under Formula.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• adjective empirical
• noun A member of a sect of ancient physicians who based their theories solely on experience.
• noun Someone who is guided by empiricism; an empiricist.
• noun Any unqualified or dishonest practitioner; a charlatan; a quack.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• adjective relying on medical quackery
• adjective derived from experiment and observation rather than theory