| primary process | In psychoanalysis, the mental process directly related to the functions of the primitive life forces associated with the id and characteristic of unconscious mental activity; marked by unorganised, illogical thinking and by the tendency to seek immediate discharge and gratification of instinctual demands. Compare: secondary process. (05 Mar 2000) |
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| primary producer | An organism that uses light to synthesise new organic material from carbon dioxide. (09 Oct 1997) |
| primary production | Production of organic substances by photosynthesis, the quantity of material so produced per unit time. (09 Oct 1997) |
| primary progressive cerebellar degeneration | A familial ataxic condition related to cerebellar degeneration. (05 Mar 2000) |
| primary pulmonary hypertension | A condition where there is increased blood pressure in the pulmonary arteries with otherwise normal heart and lungs. The cause is unknown, but there is diffuse narrowing of the pulmonary arteries resulting in increased arteriolar pressures. Secondary heart failure ensues without correction of this problem. There is an increased incidence of this disease in females between the ages of 20 and 40 years. Treatment may include a heart and lung transplant in select cases. (27 Sep 1997) |
| primary pulmonary lobule | The part of the airway consisting of a respiratory bronchiole and all of its branches. Synonym: primary pulmonary lobule, respiratory lobule. (05 Mar 2000) |
| primary pyoderma | A pyoderma, such as impetigo, in which pus formation is an essential part of the disease. (05 Mar 2000) |
| primary radiation | An incident X-ray beam. (05 Mar 2000) |
| primary rays | Cosmic ray's in the form in which they first strike the atmosphere, X-ray's generated at the focal spot of the tube. Synonym: direct rays. (05 Mar 2000) |
| primary reaction | <dermatology> The cutaneous and sometimes systemic reactions associated with vaccination with smallpox vaccine. (18 Nov 1997) |
| primary refractory anaemia | Any of a group of anaemic conditions in which there is persistent, frequently advanced anaemia that is not successfully treated by any means except blood transfusions, and that is not associated with another primary disease. (05 Mar 2000) |
| primary reinforcement | Satisfaction of physiological needs or drives, such as that supplied by food or sleep. (05 Mar 2000) |
| primary rejection | A rejection occurring more than seven days after transplantation, mainly from a cellular immune response. (05 Mar 2000) |
| primary renal calculus | A calculus formed in an apparently healthy urinary tract, usually composed of oxalates, urates, or cystine. (05 Mar 2000) |
| primary renal tubular acidosis | A metabolic defect in the mechanism of urinary acidification that may be either the transient type, with onset in infancy, or the persistent type, with onset in childhood or adult years; both types are familial. (05 Mar 2000) |
| primary amebic meningoencephalitis |
a rare and often fatal acute, febrile, purulent meningoencephalitis caused by usually free-living soil and water amebas of the genera Naegleria, Acanthamoeba, or Hartmannella. Infection caused by Naegleria is generally seen in young persons who swim or bathe in contaminated fresh water, the pathogens gaining access to the central nervous system by penetrating the nasal mucosa and cribriform plate and then following the olfactory bulbs and nerves to the brain and meninges. ...
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| primary inoculation tuberculosis |
the cutaneous reaction at the site of inoculation of tubercle bacilli in individuals with no previous exposure to Mycobacterium tuberculosis, associated with prominent involvement of regional lymph nodes, and manifested by a chancriform (tuberculous chancre, the most common manifestation), impetiginous, or ecthymatous lesion. Called also primary inoculation complex and primary tuberculous complex.
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| primary mental disorder |
[DSM-IV] any of the mental disorders that are neither due to a general medical condition nor substance-induced.
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| primary sequestrum |
a sequestrum that is entirely detached.
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| primary biliary cirrhosis |
a rare form of biliary cirrhosis of unknown etiology in which small intrahepatic bile ducts are destroyed while the major intra- and extrahepatic ducts remain patent; 90 per cent of patients are female; most are middle-aged; it is characterized by chronic cholestasis with pruritus, jaundice, hypercholesterolemia and xanthomas, osteomalacia, and, in the later stages, by portal hypertension and liver failure. Almost all patients have circulating antimitochondrial antibodies.
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| PRIM | the act of making something ready |
|---|---|
| PRIM | the first or preliminary coat of paint or size applied to a surface |
| PRIM | any igniter by which an explosive charge is ignited |
| PRIM | the first or preliminary coat of paint or size applied to a surface |
| PRIM | (obstetrics) woman who has been delivered of a child for the first time |
| PRIM | of or relating to a woman who has given birth only once |
| PRIM | a word serving as the basis for inflected or derived forms |
| PRIM | a mathematical expression from which another expression is derived |
| PRIM | a person who belongs to early stage of civilization |
| PRIM | (anthropology |
| PRIM | little evolved from or characteristic of an earlier ancestral type |
| PRIM | belonging to an early stage of technical development |