Category: O

  • Organicity

    Impairment of the central nervous system.  

  • Organic hypertension

    Hypertension that develops as a result of a specific physical cause, hypertension.  

  • Organic heart disease

    The presence of symptoms of disease of the heart due to changes or breakdown of cardiac tissues, functional heart disease.  

  • Organic evolution

    The theory that existing living forms have been derived by gradual modification from earlier and simpler forms.  

  • Organic compound

    A carbon-containing compound. There are four classes of major nutrients: (a) carbohydrates, (b) proteins, (c) lipids, and (d) vitamins. A compound containing carbon. Such compounds include carbohydrates, proteins, and fats.  

  • Organic chemical

    A substance, such as an acid, alkali, salt, or synthetic compound obtained by a chemical process, prepared for use in chemical manufacture, or used for producing a chemical effect, inorganic chemical.  

  • Organic brain syndrome

    A disorder characterized by mental confusion, disorientation, and decreased intellectual function. Possibly caused by the prolonged use of psychoactive drugs. Any of a large group of acute and chronic mental disorders associated with brain damage or impaired cerebral function. A cognitive, intellectual, or mental dysfunction that stems from physical, rather than psychiatric, origins is known…

  • Organ donor

    A person who donates one or more of his or her organs to another person whose organ is diseased, injured, or lacking.  

  • Ordinal variable

    In epidemiology, a variable having values that can be meaningfully ordered or ranked.  

  • Ordinal scale

    A scale in which responses are ranked ordered by relative magnitude but in which the intervals between successive ranks are not necessarily equal, categorical scale; interval scale; ratio scale.