| dematiaceous | Denoting dark conidia and/or hyphae, usually brown or black; used frequently to denote dark-coloured fungi. (05 Mar 2000) |
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| dematin | <protein> Actin microfilament bundling protein (52 kD, but variants of similar molecular weight are reported), contains an SH3 domain and is extensively palmitoylated, associated with membrane of erythrocytes (protein 4.9). (18 Nov 1997) |
| deme | A locally interbreeding group within a geographic population. (09 Oct 1997) |
| demean | 1. To manage; to conduct; to treat. "[Our] clergy have with violence demeaned the matter." (Milton) 2. To conduct; to behave; to comport; followed by the reflexive pronoun. "They have demeaned themselves Like men born to renown by life or death." (Shak) "They answered . . . That they should demean themselves according to their instructions." (Clarendon) 3. To debase; to lower; to degrade; followed by the reflexive pronoun. "Her son would demean himself by a marriage with an artist's daughter." (Thackeray) This sense is probably due to a false etymology which regarded the word as connected with the adjective mean. Origin: OF. Demener to conduct, guide, manage, F. Se demener to struggle pref. De- (L. De) + mener to lead, drive, carry on, conduct, fr. L. Minare to drive animals by threatening cries, fr. Minari to threaten. See Menace. Source: Websters Dictionary (01 Mar 1998) |
| demecarium bromide | A potent cholinesterase inhibitor used in the treatment of glaucoma and accommodative esotropia; it is stable in aqueous solution. (05 Mar 2000) |
| demeclocycline | <chemical> (4s-(4 alpha,4a alpha,5a alpha,6 beta,12a alpha))-7-chloro-4-dimethylamino-1,4,4a,5,5a,6,11,12a-octahydro-3,6,10,12,12a-pentahydroxy-1,11-dioxo-2-naphthacenecarboxamide. An antibiotic related to tetracycline and produced by streptomyces aureofaciens. Because it is excreted more slowly than tetracycline, it maintains effective blood levels for longer periods of time. Pharmacological action: antibiotics, tetracycline. Chemical name: 2-Naphthacenecarboxamide, 7-chloro-4-(dimethylamino)-1,4,4a,5,5a,6,11,12a-octahydro-3,6,10,12,12a-pentahydroxy-1,11-dioxo-, (4S-(4alpha,4aalpha,5aalpha,6beta,12aalpha))- (12 Dec 1998) |
| demecolcine | <chemical> 6,7-dihydro-1,2,3,10-tetramethoxy-7-(methylamino)benzo(a)heptalen-9(5h)-one. An alkaloid isolated from colchicum autumnale l. And used as an antineoplastic. Pharmacological action: antineoplastic agent, phytogenic. Chemical name: Benzo(a)heptalen-9(5H)-one, 6,7-dihydro-1,2,3,10-tetramethoxy-7-(methylamino)-, (S)- (12 Dec 1998) |
| demented | Suffering from dementia. (05 Mar 2000) |
| dementia | <neurology, psychiatry> An organic mental disorder characterised by a general loss of intellectual abilities involving impairment of memory, judgment and abstract thinking as well as changes in personality. It does not include loss of intellectual functioning caused by clouding of consciousness (as in delirium) nor that caused by depression or other functional mental disorder (pseudodementia). Dementia may be caused by a large number of conditions, some reversible and some progressive, that cause widespread cerebral and damage or dysfunction. The most common cause is Alzheimer's disease, others are cerebrovascular disease (multi infarct dementia), central nervous system infection, brain trauma or tumours, pernicious anaemia, folic acid deficiency, Wernicke Korsakoff syndrome, normal pressure hydrocephalus, and, neurological diseases such as Huntington disease, multiple sclerosis and Parkinson's disease. Origin: L. Mens = mind (18 Nov 1997) |
| dementia paralytica | Dementia and paralysis resulting from a chronic syphilitic meningoencephalitis. Synonym: dementia paralytica. (05 Mar 2000) |
| dementia paranoides | Dementia with paranoid features. Posttraumatic dementia, dementia caused by traumatic brain injury. Dementia praecox, any one of the group of psychotic disorders known as the schizophrenias; formerly used to describe schizophrenia as a single entity. Origin: L. Precocious (05 Mar 2000) |
| dementia, multi-infarct | Organic mental disorder caused by repetitive multiple cerebral infarcts which act cumulatively to produce dementia. Vascular disease is always presumed to be present. (12 Dec 1998) |
| dementia, vascular | An organic mental disorder caused by systemic vascular disease such as arteriosclerotic changes in the vessels, valvular heart disease, hypertension, etc., and resulting in cerebral vascular disease with dementia. (12 Dec 1998) |
| dementia-nuchal dystonia | A disorder that is associated with nerve cell destruction and progressive lack of coordination, neck stiffness, trunk stiffness, problems with eye movement and mild dementia. Disorders that are similar include Alzheimer's disease, cerebellar dysfunction, Jakob-Creutzfeldt disease and Parkinson's disease. The cause for progressive supranuclear palsy is unknown, but is likely a degenerative nerve disorder that is somehow triggered by a viral infection. Pathologic changes include nerve cell damage and destruction of myelin sheath. There is no known cure. (27 Sep 1997) |
| demerol | <drug> A prescription narcotic drug that is used to kill pain. Demerol, like other narcotics, is an addictive drug. (09 Oct 1997) |