| dichlororibofuranosylbenzimidazole | <chemical> Inhibits selectively and reversibly the synthesis of two-thirds of nuclear heterogeneous RNA and approximately 95% of mRNA. Drb can markedly increase interferon production by poly I-c-induced human fibroblasts. It is used as a tool in the study of intracellular mechanisms. Pharmacological action: nucleic acid synthesis inhibitors. Chemical name: 1H-Benzimidazole, 5,6-dichloro-1-beta-D-ribofuranosyl- (12 Dec 1998) |
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| dichlorovos | <chemical> An organophosphorus insecticide that inhibits acetylcholinesterase. Pharmacological action: anthelmintic, cholinesterase inhibitor, insecticide, organophosphate. Chemical name: Phosphoric acid, 2,2-dichloroethenyl dimethyl ester (12 Dec 1998) |
| dichlorphenamide | <chemical> A carbonic anhydrase inhibitor that is used in the treatment of glaucoma. Pharmacological action: carbonic anhydrase inhibitors. Chemical name: 1,3-Benzenedisulfonamide, 4,5-dichloro- (12 Dec 1998) |
| dichlorvos | <chemical> An organophosphorus insecticide that inhibits acetylcholinesterase. Pharmacological action: anthelmintic, cholinesterase inhibitor, insecticide, organophosphate. Chemical name: Phosphoric acid, 2,2-dichloroethenyl dimethyl ester (12 Dec 1998) |
| dichogamous | <botany> Manifesting dichogamy. Source: Websters Dictionary (01 Mar 1998) |
| dichogamy | <botany> The condition of certain species of plants, in which the stamens and pistil do not mature simultaneously, so that these plants can never fertilize themselves. Origin: Gr. In two, asunder + marriage. Source: Websters Dictionary (01 Mar 1998) |
| dichorial | Dichorionic Showing evidence of two chorions. Origin: G. Di-, two, + chorion (05 Mar 2000) |
| dichorial twins | Dizygotic twins are siblings who have shared a common uterine environment. They are due to fertilization of two different ova by different sperm. Dizygotic twins are also called fraternal twins. (12 Dec 1998) |
| dichorionic diamniotic placenta | The placenta(s) of a twin pregnancy; if dizygotic, the placenta's may be separate or fused, the latter retaining two amniotic and two chorionic sacs (dichorionic diamniotic placenta); if monozygotic, the placenta may be a (05 Mar 2000) |
| dichotic | Forking into two equal branches resulting from division of the growing point. (09 Oct 1997) |
| dichotic listening tests | Tests for central hearing disorders based on the competing message technique (binaural separation). (12 Dec 1998) |
| dichotomize | 1. To cut into two parts; to part into two divisions; to divide into pairs; to bisect. "The apostolical benediction dichotomizes all good things into grace and peace." (Bp. Hall) 2. <astronomy> To exhibit as a half disk. See Dichotomy. 3. "[The moon] was dichotomized." Origin: See Dichotomous. Source: Websters Dictionary (01 Mar 1998) |
| dichotomous | Forking into two equal branches resulting from division of the growing point. (09 Oct 1997) |
| dichotomy | 1. A cutting in two; a division. "A general breach or dichotomy with their church." (Sir T. Browne) 2. Division or distribution of genera into two species; division into two subordinate parts. 3. <astronomy> That phase of the moon in which it appears bisected, or shows only half its disk, as at the quadratures. 4. <biology> Successive division and subdivision, as of a stem of a plant or a vein of the body, into two parts as it proceeds from its origin; successive bifurcation. 5. The place where a stem or vein is forked. 6. <logic> Division into two; especially, the division of a class into two subclasses opposed to each other by contradiction, as the division of the term man into white and not white. Origin: Gr, fr., cf. F. Dichotomie. See Dichotomous. Source: Websters Dictionary (01 Mar 1998) |
| dichroic | Relating to dichroism. (05 Mar 2000) |