| nonane | <chemistry> One of a group of metameric hydrocarbons C9H20 of the paraffin series; so called because of the nine carbon atoms in the molecule. Normal nonane is a colourless volatile liquid, an ingredient of ordinary kerosene. Origin: L. Nonus ninth. Source: Websters Dictionary (01 Mar 1998) |
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| nonapeptide | An oligopeptide containing nine amino acid residues (e.g., oxytocin). (05 Mar 2000) |
| nonaprenyl-4-hydroxybenzoate transferase | <enzyme> Ph optimum 7.5; completely inhibited by triton x-100 and deoxycholate, but not by taurodeoxycholate and beta-octyl glucoside; mediates the transfer of the polyisoprenoid side chain to 4-hydroxybenzoate in ubiquinone biosynthesis Registry number: EC 2.5.1.- Synonym: n4hb transferase (26 Jun 1999) |
| nonbacterial thrombotic endocarditis | Verrucous endocardial lesions occurring in the terminal stages of many chronic infectious and wasting diseases. Synonym: abacterial thrombotic endocarditis, cachectic endocarditis, terminal endocarditis, thromboendocarditis. (05 Mar 2000) |
| nonbacterial verrucous endocarditis | Verrucous endocarditis sometimes associated with disseminated lupus erythematosus. Synonym: atypical verrucous endocarditis, Libman-Sacks syndrome, nonbacterial verrucous endocarditis. (05 Mar 2000) |
| nonbullous congenital ichthyosiform erythroderma | Erythroderma or a collodion membrane at birth, usually without improvement during childhood, characterised by proliferation of epidermal keratinocytes with lipid accumulation; autosomal recessive inheritance. (05 Mar 2000) |
| nonbursate | Denoting a nontaxonomic division of Nematoda embracing those in which the male copulatory bursa is only a skin fold containing no fleshy ribs, as seen in the hookworms, and other bursate nematodes. Origin: L. Non, not, + Mediev. L. Bursa, purse (05 Mar 2000) |
| noncalcified | <radiology> Not containing calcium. This distinction can often be made by the appearance on conventional X-ray. (27 Sep 1997) |
| noncariogenic | Not caries-producing. (05 Mar 2000) |
| noncellular | 1. Lacking cellular organization, as applied to viruses, which can only replicate within a cell, whether prokaryotic or eukaryotic. Synonym: subcellular. Synonym: acellular. (05 Mar 2000) |
| nonchromaffin paraganglioma | Aortic body, carotid body, chemoreceptor, or glomus jugulare tumour; nonchromaffin paraganglioma; receptoma; a relatively rare, usually benign neoplasm originating in the chemoreceptor tissue of the carotid body, glomus jugulare, and aortic bodies; consisting histologically of rounded or ovoid hyperchromatic cells that tend to be grouped in an alveolus-like pattern within a scant to moderate amount of fibrous stroma and a few large thin-walled vascular channels. Compare: paraganglioma. Synonym: aortic body tumour, carotid body tumour, chemoreceptor tumour, glomus jugulare tumour, nonchromaffin paraganglioma. Origin: chemo-+ G. Dektes, receiver, fr. Dechomai, to receive, + -oma, tumour (05 Mar 2000) |
| nonchromogens | Mycobacteria that are either colourless or that slowly produce a light yellow pigment when grown in the presence of light. Organisms placed in this group belong to the species Mycobacterium intracellulare. Synonym: nonchromogens. (05 Mar 2000) |
| nonclassical phenylketonuria | DHPR-deficient form; an inherited disorder in which there is an absence or deficiency of dihydropteridine reductase (DHPR); this results in impaired regeneration of tetrahydrobiopterin, causing an elevation in phenylalanine levels, GTP-CH form; an inherited disorder in which there is a deficiency of guanosine triphosphate cyclohydrolase, an enzyme used in the biosynthesis of tetrahydrobiopterin, 6-PTS form; an inherited disorder in which there is a deficiency of 6-pyruvoyl tetrahydropterin synthase, an enzyme that participates in the biosynthesis of tetrahydrobiopterin. Synonym: nonclassical phenylketonuria. (05 Mar 2000) |
| nonclonogenic cell | A cell that does not give rise to a colony of cell's (large numbers of cell's that are genetically identical); may undergo two or more cell divisions, but all daughter cell's are destined to die or differentiate (losing all potential to divide). (05 Mar 2000) |
| noncoding DNA | <molecular biology> DNA that does not code for part of a polypeptide chain or RNA.This includes introns and pseudo genes. In eukaryotes the majority of the DNA is noncoding. Noncoding strand refers to the so called nonsense strand, as opposed to the sense strand which is actually translated into mRNA. (18 Nov 1997) |
| noninvasive |
relating to a technique that does not involve puncturing the skin or entering a body cavity
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| nonflammable |
impossible to ignite
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| nonleaded |
lead-free: (of gasoline) not containing tetraethyl lead; "lead-free gasoline"
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| nonparametric |
not involving an estimation of the parameters of a statistic
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| nonparametric statistics |
the branch of statistics dealing with variables without making assumptions about the form or the parameters of their distribution
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| non | (of a trait or condition) failing to serve an adjustive purpose |
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| non | not causing or characterized by addiction |
| non | not tending to adhere |
| non | not adjacent |
| non | lacking a capacity to adsorb or cause to accumulate on a surface |
| non | lacking a capacity to adsorb or cause to accumulate on a surface |
| non | any age prior to the legal age |
| non | (law) not of legal age |
| non | someone whose age is in the nineties |
| non | being from 90 to 99 years old |
| non | a policy of not initiating hostilities |
| non | not aggressive |