| nit | <zoology> The egg of a louse or other small insect. <botany> Nit grass, a pretty annual European grass (Gastridium lendigerum), with small spikelets somewhat resembling a nit. It is also found in California and Chili. Origin: AS. Hnitu; akin to D. Neet, G. Niss, OHG. Niz; cf. Gr, Icel. Gnit, Sw. Gnet, Dan. Gnid, Russ. & Pol. Gnida, Bohem. Hnida, W. Nedd. Source: Websters Dictionary (01 Mar 1998) |
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| Nitabuch | Raissa, 19th century German physician. See: Nitabuch's layer, Nitabuch's membrane, Nitabuch's stria. (05 Mar 2000) |
| Nitabuch's layer | A layer of fibrin between the boundary zone of compact endometrium and the cytotrophoblastic shell in the placenta. Synonym: Nitabuch's layer, Nitabuch's stria. (05 Mar 2000) |
| Nitabuch's membrane | A layer of fibrin between the boundary zone of compact endometrium and the cytotrophoblastic shell in the placenta. Synonym: Nitabuch's layer, Nitabuch's stria. (05 Mar 2000) |
| Nitabuch's stria | A layer of fibrin between the boundary zone of compact endometrium and the cytotrophoblastic shell in the placenta. Synonym: Nitabuch's layer, Nitabuch's stria. (05 Mar 2000) |
| Nitella | Characean alga that has giant, multinucleate internodal cells. These show cytoplasmic streaming at rates of up to 100 m/sec and have been used as models for motile phenomena in cells and in studies on ionic movement. (18 Nov 1997) |
| niteosaccharin | <chemistry> An explosive nitro derivative of certain sugars, analogous to nitroglycerin, gun cotton, etc. Origin: Nitro- + saccharin. Source: Websters Dictionary (01 Mar 1998) |
| niter | Synonym: potassium nitrate. Origin: G. Nitron, soda, formerly not distinguished from potash (05 Mar 2000) |
| niter paper | Paper impregnated with potassium nitrate that is ignited to produce fumes inhaled as treatment for asthma. Synonym: potassium nitrate paper, saltpeter paper. Occluding paper, an inked paper or ribbon interposed between natural or artificial teeth to determine tooth contacts. Synonym: articulating paper. (05 Mar 2000) |
| nitinol filter | A vena cava filter made with a metal that springs into shape when warmed to body heat by the blood after catheter insertion. (05 Mar 2000) |
| niton | Archaic term for radon. (05 Mar 2000) |
| nitracrine | <chemical> Acridine antineoplastic agent used in mammary and ovarian tumours. It inhibits RNA synthesis. Pharmacological action: antineoplastic agent, nucleic acid synthesis inhibitors. Chemical name: 1,3-Propanediamine, N,N-dimethyl-N'-(1-nitro-9-acridinyl)- (12 Dec 1998) |
| nitranilic | <chemistry> Of, pertaining to, or designating, a complex organic acid produced as a white crystalline substance by the action of nitrous acid on hydroquinone. Origin: Nitro- + chloranil + -ic. Source: Websters Dictionary (01 Mar 1998) |
| nitraniline | <chemistry> Any one of a series of nitro derivatives of aniline. In general they are yellow crystalline substances. Origin: Nitro- + aniline. Source: Websters Dictionary (01 Mar 1998) |
| nitratase | <enzyme> Anaerobic bacteria convert nitrate to free nitrogen Registry number: EC 1.7.99.- (26 Jun 1999) |