| primary teeth | <dentistry> The first set of teeth that develop in childhood. Synonym: deciduous teeth. (08 Jan 1998) |
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| primary telangiectasia | angioma serpiginosum |
| primary tooth | A tooth of the first set of teeth, comprising 20 in all, that erupts between the mean ages of 6 and 28 months of life. Synonym: dens deciduus, baby tooth, deciduous dentition, dens lacteus, first dentition, milk tooth, primary dentition, primary tooth, temporary tooth. (05 Mar 2000) |
| primary transcript | <molecular biology> RNA transcript immediately after transcription in the nucleus, before RNA splicing or polyadenylation to form the mature mRNA. (18 Nov 1997) |
| primary tuberculosis | First infection by Mycobacterium tuberculosis, typically seen in children but also occurs in adults, characterised in the lungs by the formation of a primary complex consisting of small peripheral pulmonary focus with spread to hilar or paratracheal lymph nodes; may cavitate or heal with scarring or may progress. Synonym: childhood type tuberculosis. (05 Mar 2000) |
| primary tumour | <oncology> The mass of tumour cells at the original site of the neoplastic event from the primary tumour metastasis will lead to the establishment of secondary tumours. (18 Nov 1997) |
| primary union | Healing by fibrous adhesion, without suppuration or granulation tissue formation. Synonym: primary adhesion, primary union. (05 Mar 2000) |
| primary uterine inertia | True uterine inertia, uterine inertia that occurs when the uterus fails to contract with sufficient force to effect continuous dilation or effacement of the cervix or descent or rotation of the foetal head, and when the uterus is easily indentable at the acme of contraction, secondary uterine inertia, uterine inertia that occurs when the uterine contractions are vigorous but, as a result of the exhaustion or dehydration of the patient, decrease in vigor, and the progress of labour ceases. (05 Mar 2000) |
| primary vaccination | <virology> First or principal vaccination with the introduction of a vaccine into the body for the purpose of inducing immunity. (18 Nov 1997) |
| primary villus | The first stage of chorionic villus development, with columns of cytotrophoblastic cells covered by syncytiotrophoblast. (05 Mar 2000) |
| primary visual area | Area of the occipital lobe concerned with vision. (12 Dec 1998) |
| primary visual cortex | See: visual cortex. (05 Mar 2000) |
| primary vitreous | The vitreous first formed in the embryo between the optic cup and the lens vesicle, and later vascularised by the hyaloid artery and its branches. (05 Mar 2000) |
| primase | <enzyme> The enzyme that polymerises nucleotide triphosphates to form oligoribonucleotides in a 5' to 3' direction. The enzyme synthesises the RNA for RNA DNA sequences that later become Okazaki fragments and also RNA primers for some types of phage using an sDNA template. (18 Nov 1997) |
| primate | <zoology> The highest order of mammals. It includes man, together with the apes and monkeys. Cf. Pitheci. Origin: OE. Primat, F. Primat, L. Primas, -atis one of the first, chief, fr. Primus the first. See Prime. Source: Websters Dictionary (01 Mar 1998) |
| 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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| PRI | a leading female ballet dancer |
|---|---|
| PRI | a distinguished female operatic singer |
| PRI | a vain and temperamental person |
| PRI | as it seems at first sight |
| PRI | at first sight |
| PRI | the state of being first in importance |
| PRI | having existed from the beginning |
| PRI | having existed from the beginning |
| PRI | serving as an essential component |
| PRI | synthetic antimalarial drug |
| PRI | for the most part |
| PRI | of primary import |