| diamfenetide | <chemical> Anthelmintic. It has been shown to be useful in fasciola infections in sheep. Pharmacological action: antiplatyhelmintic agents. Chemical name: Acetamide, N,N'-(oxybis(2,1-ethanediyloxy-4,1-phenylene))bis- (12 Dec 1998) |
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| diamide | <chemistry> Any compound containing two amido groups united with one or more acid or negative radicals, as distinguished from a diamine. Cf. Amido acid, under Amido, and Acid amide. Origin: Pref. Di- + amide. Source: Websters Dictionary (01 Mar 1998) |
| diamidines | A group of compounds containing two amidine groups; e.g., stilbamidine, propamidine. (05 Mar 2000) |
| diamido- | <chemistry, prefix> A prefix or combining form of Diamine. Origin: Also used adjectively. (29 Oct 1998) |
| diamine | <chemistry> A compound containing two amido groups united with one or more basic or positive radicals, as contrasted with a diamide. In chemical nomenclature, if any amine or diamine is named by prefixing the nitrogen group, the name of the latter takes the form of amido, diamido, etc, thus ethylene diamine, C2H4.(NH2)2, is also called diamido-ethylene. Origin: Pref. Di- + amine. Source: Websters Dictionary (01 Mar 1998) |
| diamine aminotransferase | <enzyme> Catalyses the conversion of an alpha,omega-diamine to an omega-aminoaldehyde and glutamate in the presence of 2-oxoglutarate Registry number: EC 2.6.1.29 Synonym: putrescine-alpha-ketoglutarate aminotransferase, pakg-transaminase (26 Jun 1999) |
| diamine oxidase | amine oxidase (copper-containing), amine oxidase (flavin-containing) |
| diamines | Organic chemicals which have two amino groups in an aliphatic chain. (12 Dec 1998) |
| diamino oxyhydrase | amine oxidase (copper-containing) |
| diaminopimelic acid | <chemical> 2,6-diaminoheptanedioic acid Chemical name: Heptanedioic acid, 2,6-diamino- (12 Dec 1998) |
| diaminopropionate ammonia-lyase | <enzyme> Used for the determination of diaminopropionic acid Registry number: EC 4.3.1.- (26 Jun 1999) |
| diamniotic | Exhibiting two amniotic sacs. (05 Mar 2000) |
| diamond | 1. A precious stone or gem excelling in brilliancy and beautiful play of prismatic colours, and remarkable for extreme hardness. The diamond is native carbon in isometric crystals, often octahedrons with rounded edges. It is usually colourless, but some are yellow, green, blue, and even black. It is the hardest substance known. The diamond as found in nature (called a rough diamond) is cut, for use in jewelry, into various forms with many reflecting faces, or facets, by which its brilliancy is much increased. See Brilliant, Rose. Diamonds are said to be of the first water when very transparent, and of the second or third water as the transparency decreases. 2. A geometrical figure, consisting of four equal straight lines, and having two of the interior angles acute and two obtuse; a rhombus; a lozenge. 3. One of a suit of playing cards, stamped with the figure of a diamond. 4. A pointed projection, like a four-sided pyramid, used for ornament in lines or groups. 5. The infield; the square space, 90 feet on a side, having the bases at its angles. 6. The smallest kind of type in English printing, except that called brilliant, which is seldom seen. This line is printed in the type called Diamond. <chemistry> Black diamond, coal;, a harmless snake of Australia (Morelia spilotes); the carpet snake. Glazier's diamond, a small diamond set in a glazier's tool, for cutting glass. Origin: OE. Diamaund, diamaunt, F. Diamant, corrupted, fr. L. Adamas, the hardest iron, steel, diamond, Gr. Perh. The corruption is due to the influence of Gr. Transparent. See Adamant, Tame. Source: Websters Dictionary (01 Mar 1998) |
| diamond cutting instruments | In dentistry, cylinders, disks, and other cutting instrument's to which numerous small diamond pyramids have been attached by a plating of metal. (05 Mar 2000) |
| diamond disk | A steel disk with the cutting surface(s) covered with fine diamond chips, for use in a dental handpiece. (05 Mar 2000) |