| rummager | 1. One who rummages. 2. A person on shipboard whose business was to take charge of stowing the cargo; formerly written roomager, and romager. "The master must provide a perfect mariner, called a romager, to range and bestow all merchandise." (Hakluyt). Source: Websters Dictionary (01 Mar 1998) |
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| Rummel tourniquet | A tourniquet fashioned by passing an umbilical tape around a vessel and bringing both ends through a short red rubber catheter. The tourniquet can be tightened and secured with a perpendicularly placed haemostat at the end of the catheter farthest from the vessel. (05 Mar 2000) |
| rummer | A large and tall glass, or drinking cup. Origin: D. Roemer, romer, akin to G. Romer, Sw. Remmare; perhaps properly, Roman. Source: Websters Dictionary (01 Mar 1998) |
| Rumpel, Theodor | <person> German physician, 1862-1923. See: Rumpel-Leede sign, Rumpel-Leede test, Rumpel-Leede phenomenon. (05 Mar 2000) |
| Rumpel-Leede phenomenon | Appearance of petechiae in an area following application of vascular constriction, such as by a tourniquet, usually after 10 minutes but can appear after shorter period, such as following application of tourniquet to draw blood specimen or use of blood pressure cuff. Due to capillary fragility or abnormal platelet numbers (e.g. Thrombocytopenia) or function. (05 Mar 2000) |
| Rumpel-Leede sign | A tourniquet test for capillary fragility, often positive in the presence of severe thrombocytopenia. See: capillary fragility test. Synonym: bandage sign, Hess' test, Rumpel-Leede sign. (05 Mar 2000) |
| Rumpel-Leede test | A tourniquet test for capillary fragility, often positive in the presence of severe thrombocytopenia. See: capillary fragility test. Synonym: bandage sign, Hess' test, Rumpel-Leede sign. (05 Mar 2000) |
| run | <marine biology> A group of fish migrating in a river (most often on a spawning migration) that may comprise one or many stocks. (17 Dec 1997) |
| runaround | Colloquialism for paronychia. (05 Mar 2000) |
| runaway behaviour | A behavioural response manifested by leaving home in order to escape from threatening situations. Children or adolescents leaving home without permission is usually implied. (12 Dec 1998) |
| runaway electrons | <radiobiology> Those electrons in a plasma that gain energy from an applied electrical field at a faster rate than they lose it through collisions with other particles. These electrons tend to run away in energy (not position) from the cooler remainder of the background plasma, because the collision cross-section decreases as the particle's velocity increases, so that the faster the particle goes, the less likely it is to be stopped. See: collision cross-section. (17 Dec 1997) |
| runaway pacemaker | Rapid heart rates over 140/min caused by electronic circuit instability in an implanted pulse generator. (05 Mar 2000) |
| runch | <botany> The wild radish. Source: Websters Dictionary (01 Mar 1998) |
| runcinate | Deeply lobed and with the lobes slanted away from the apex. (09 Oct 1997) |
| Rundle, A | <person> British physician. See: Richards-Rundle syndrome. (05 Mar 2000) |