| dartos | <anatomy> A thin layer of peculiar contractile tissue directly beneath the skin of the scrotum. Origin: NL, fr. Gr. Flayed. Source: Websters Dictionary (01 Mar 1998) |
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| dartos fascia | A layer of smooth muscular tissue in the integument of the scrotum. See: dartos muliebris. Synonym: tunica dartos, dartos muscle, membrana carnosa, tunica carnea. (05 Mar 2000) |
| dartos muscle | A layer of smooth muscular tissue in the integument of the scrotum. See: dartos muliebris. Synonym: tunica dartos, dartos muscle, membrana carnosa, tunica carnea. (05 Mar 2000) |
| dartrous | <medicine> Relating to, or partaking of the nature of, the disease called tetter; herpetic. Dartroud diathesis, A morbid condition of the system predisposing to the development of certain skin deseases, such as eczema, psoriasis, and pityriasis. Also called rheumic diathesis, and hipretism. Origin: F. Dartreux. See Dartars. Source: Websters Dictionary (01 Mar 1998) |
| Darwin | Charles R., English biologist and evolutionist, 1809-1882. See: darwinian ear, Darwinian evolution, darwinian reflex, darwinian theory, darwinian tubercle. (05 Mar 2000) |
| Darwin, Charles | <person> An English naturalist who lived from 1809 to 1882, he studied and documented the flora and fauna of parts of coastal South America, including the Galapagos Islands, but is most famous for developing the theories of evolution and natural selection. Lived: 1809-1882. (09 Oct 1997) |
| darwinian | Pertaining to Darwin; as, the Darwinian theory, a theory of the manner and cause of the supposed development of living things from certain original forms or elements. This theory was put forth by Darwin in 1859 in a work entitled "The Origin of species by Means of Natural Selection." The author argues that, in the struggle for existence, those plants and creatures best fitted to the requirements of the situation in which they are placed are the ones that will live; in other words, that Nature selects those which are survive. This is the theory of natural selection or the survival of the fillest. He also argues that natural selection is capable of modifying and producing organisms fit for their circumstances. See Development theory, under Development. Origin: From the name of Charles Darwin, an English scientist. Source: Websters Dictionary (01 Mar 1998) |
| darwinian ear | An auricle in which the upper border is not rolled over to form the helix, but projects upward as a flat, sharp edge. (05 Mar 2000) |
| Darwinian evolution | The proposition that the phylogeny of all species is wholly ascribable to the combined effects of random variation (mutation) in genotypes of the members of a stock as a result of the operation of undirected accidents with consequences to their phenotypes and the operation of preferential (but by no means certain) survival of those resulting phenotypes most suited to survive in the contemporary environment. The proposed system survives largely because of genetic factors that avidly conserve the ontogeny of the stock. (05 Mar 2000) |
| darwinian reflex | The tendency of young infants to grasp a bar and hang suspended. Compare: grasping reflex. (05 Mar 2000) |
| darwinian theory | The theory of the origin of species and of the development of higher organisms from lower forms through natural selection (survival of the fittest in the struggle for existence), and of the evolution of humans from an ancestor common to himself and the apes. (05 Mar 2000) |
| darwinian tubercle | A small projection from the upper end of the posterior portion of the incurved free margin of the helix. Synonym: tuberculum auriculae, darwinian tubercle, tuberculum superius. (05 Mar 2000) |
| darwinism | <biology> The theory or doctrines put forth by Darwin. See above. Source: Websters Dictionary (01 Mar 1998) |
| dasher | 1. That which dashes or agitates; as, the dasher of a churn. 2. A dashboard or splashboard. 3. One who makes an ostentatious parade. Source: Websters Dictionary (01 Mar 1998) |
| dashism | The character of making ostentatious or blustering parade or show. "He must fight a duel before his claim to . . . Dashism can be universally allowed." (V. Knox) Source: Websters Dictionary (01 Mar 1998) |
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| daunorubicin |
An anticancer drug that belongs to the family of drugs called antitumor antibiotics. It is an anthracycline.
Ãâó: www.stjude.org/glossary
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| danazol |
A synthetic hormone that belongs to the family of drugs called androgens and is used to treat endometriosis. It is being evaluated in the treatment of endometrial cancer.
Ãâó: www.stjude.org/glossary
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| Darier's sign |
urtication and itching occurring on rubbing the lesions of urticaria pigmentosa.
Ãâó: www.merckmedicus.com/pp/us/hcp/thcp_dorlands_conte...
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| Dalrymple's sign |
one manifestation of Graves' orbitopathy, consisting of retraction of the eyelids so that the palpebral opening is abnormally wide. See also Stellwag's s.
Ãâó: www.merckmedicus.com/pp/us/hcp/thcp_dorlands_conte...
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| data modeling |
A process where the relationships between data elements are identified and defined to develop data models.
Ãâó: highered.mcgraw-hill.com/sites/0072823119/student_...
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| DA | of or relating to Dalmatia or its inhabitants |
|---|---|
| DA | European iris having soft lilac-blue flowers |
| DA | erect shrub having large trifoliate leaves and dense clusters of yellow flowers followed by poisonous seeds |
| DA | white-flowered pyrethrum of Balkan area whose pinnate leaves are white and silky-hairy below |
| DA | herb of the Pacific islands grown throughout the tropics for its edible root and in temperate areas as an ornamental for its large glossy leaves |
| DA | English chemist and physicist who formulated atomic theory and the law of partial pressures |
| DA | United States screenwriter who was blacklisted and imprisoned for refusing to cooperate with congressional investigations of communism in America (1905-1976) |
| DA | (chemistry and physics) law stating that the pressure exerted by a mixture of gases equals the sum of the partial pressures of the gases in the mixture |
| DA | (chemistry) law stating that when two elements can combine to form more than one compound the amounts of one of them that combines with a fixed amount of the other will exhibit a simple multiple relation |
| DA | (chemistry and physics) law stating that the pressure exerted by a mixture of gases equals the sum of the partial pressures of the gases in the mixture |
| DA | dichromacy characterized by a lowered sensitivity to green light resulting in an inability to distinguish green and purplish-red |
| DA | female parent of an animal especially domestic livestock |
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