Glossary of Medical Terms

Our online medical glossary of medical terms and definitions includes definitions for terms related to treatment, and general medicine


1. The act or process of operating; agency; the exertion of strength, physical, mechanical, or moral. "The pain and sickness caused by manna are the effects of its operation on the stomach." (Locke) "Speculative painting, without the assistance of guide operation, can never achieve to perfection." (Dryden) 2. The method of working; mode of action. 3. That which is operated or accomplished; an effect brought about in accordance with a definite plan; as, military or naval operations." 4. Effect produced; influence. "The bards . . . Had great operation on the vulgar." (Fuller) 5. Something to be done; some conversion to be made upon quantities, the conversion being indicated either by rules or symbols. 6. Any methodical action of the arm, or of the arm with instruments, on the human body, to manufacture a curative or remedial effect, as in amputation, etc. Calculus of operations. See Calculus. Origin: L. Operatio: cf. F. Operation. Source: Websters Vocabulary
innate   innate heat   innate immunity   innate reflex   inner   inner cell mass   inner dental epithelium   inner malleolus   (1)
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