| nonabsorbable ligature | A permanent ligature of inert material, such as silk, wire, or synthetic fibre, that does not undergo dissolution in human tissues. (05 Mar 2000) |
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| nonabsorbable surgical suture | Surgical suture material that is relatively unaffected by the biological activities of the body tissues and is therefore permanent unless removed; e.g., stainless steel, silk, cotton, nylon, and other synthetic materials. (05 Mar 2000) |
| nonaccommodative esotropia | That type of esotropia not influenced by correction of refractive error. Synonym: basic esotropia. (05 Mar 2000) |
| nonachlazine | <chemical> 2-chloro-10-(3-(hexahydropyrrolo(1,2-a) pyrazin-2-(1h)-oxopropyl-10h-phenothiazine. Coronary vasodilator with a novel mechanism of action; proposed as antianginal agent. Pharmacological action: vasodilator agents. Chemical name: 10H-Phenothiazine, 2-chloro-10-(3-(hexahydropyrrolo(1,2-a)pyrazin-2(1H)-yl)-1-oxopropyl)-, dihydrochloride (12 Dec 1998) |
| nonacid | <chemistry> Destitute of acid properties; hence, basic; metallic; positive; said of certain atoms and radicals. Source: Websters Dictionary (01 Mar 1998) |
| nonadrenergic, noncholinergic neuron | Autonomic efferent neuron whose transmission is not blocked by blocking adrenergic and cholinergic transmission. Nitric oxide may be the transmitter in some cases. (05 Mar 2000) |
| nonaerobiotic | <biology> Capable of living without atmospheric oxygen; anaerobiotic. Source: Websters Dictionary (01 Mar 1998) |
| nonage | The ninth part of movable goods, formerly payable to the clergy on the death of persons in their parishes. Origin: LL. Nonagium, from L. Nonus ninth, novem nine. Source: Websters Dictionary (01 Mar 1998) |
| nonagesimal | <astronomy> Of or pertaining to the ninetieth degree or to a nonagesimal. Origin: L. Nonagesimus the ninetieth. See Nonagenarian. <astronomy> The middle or highest point of the part of the ecliptic which is at any given moment above the horizon. It is the ninetieth degree of the ecliptic, reckoned from the points in which it is intersected by the horizon. Source: Websters Dictionary (01 Mar 1998) |
| nonagon | <mathematics> A figure or polygon having nine sides and nine angles. Origin: L. Nonus ninth + Gr. Angle. Source: Websters Dictionary (01 Mar 1998) |
| nonagrian | <zoology> Any moth of the genus Nonagria and allied genera, as the spindleworm and stalk borer. Origin: Etymol. Uncertain. Source: Websters Dictionary (01 Mar 1998) |
| nonallele | Used of genes that are not competitors at the same locus; how independently they will behave depends on whether their loci are linked. At least when first formed (for instance, as a result of unequal crossing-over) two nonalleles may be identical. (05 Mar 2000) |
| nonan | Occurring on the ninth day. Origin: L. Nonus, ninth (05 Mar 2000) |
| nonan malaria | A malarial fever with paroxysms that occur every ninth day, i.e., every eighth day following the preceding paroxysm, the day of each paroxysm being included in the computation. Ovale malaria Ovale tertian malaria, malaria caused by Plasmodium ovale. (05 Mar 2000) |
| nonanatomic teeth | Teeth with occlusal surfaces not based on anatomic forms; artificial teeth so designed that the occlusal surfaces are not copied from natural forms, but rather are given forms which in the opinion of the designer seem more nearly to fulfill the requirements of mastication, tissue tolerance, etc. (05 Mar 2000) |