| rubrospinal tract | A somatotopically organised fibre bundle, relatively small in humans, arising from the red nucleus, immediately crossing in the ventral tegmental decussation, descending near the lateral surface of the brainstem into the lateral funiculus of the spinal cord at the ventral border of the lateral pyramidal tract. It terminates in the zona intermedia of the spinal cord where its distribution coincides with that of the lateral pyramidal tract; in contrast to the latter it appears not to have direct connections with spinal motor neurons. Impulses conveyed by this tract indirectly increase flexor muscle tone. Synonym: tractus rubrospinalis, Monakow's bundle, Monakow's tract, prepyramidal tract. (05 Mar 2000) |
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| rubulavirus | A genus of the family paramyxoviridae (subfamily paramyxovirinae) where all the species have haemagglutinin and neuraminidase activities but lack a c protein. Mumps virus is the type species. (12 Dec 1998) |
| rubulavirus infections | Infections with viruses of the genus rubulavirus, family paramyxoviridae. (12 Dec 1998) |
| rubus | <botany> A genus of rosaceous plants, including the raspberry and blackberry. Origin: L. Source: Websters Dictionary (01 Mar 1998) |
| ruby | Origin: F. Rubis (cf. Pr. Robi), LL. Rubinus, robinus, fr. L. Rubeus = red, reddish, akin to ruber. See Rouge, red. 1. <chemical> A precious stone of a carmine red colour, sometimes verging to violet, or intermediate between carmine and hyacinth red. It is a red crystallized variety of corundum. Besides the true or Oriental ruby above defined, there are the balas ruby, or ruby spinel, a red variety of spinel, and the rock ruby, a red variety of garnet. "Of rubies, sapphires, and pearles white." (Chaucer) 2. The colour of a ruby; carmine red; a red tint. "The natural ruby of your cheeks." (Shak) 3. That which has the colour of the ruby, as red wine. Hence, a red blain or carbuncle. 4. See Agate. 5. <ornithology> Any species of South American humming birds of the genus Clytolaema. The males have a ruby-coloured throat or breast. <chemistry> Ruby of arsenic, Ruby of sulphur, red silver. See Red. Source: Websters Dictionary (01 Mar 1998) |
| ruby spots | <tumour> A red papule due to weakening of the capillary wall, seen mostly in persons over 30 years of age. Synonym: cherry angioma, De Morgan's spots, ruby spots. (05 Mar 2000) |
| rubytail | <zoology> A European gold wasp (Chrysis ignita) which has the under side of the abdomen bright red, and the other parts deep bluish green with a metallic luster. The larva is parasitic in the nests of other wasps and of bees. Source: Websters Dictionary (01 Mar 1998) |
| rubythroat | <ornithology> Any one of numerous species of humming birds belonging to Trochilus, Calypte, Stellula, and allies, in which the male has on the throat a brilliant patch of red feathers having metallic reflections; especially, the common humming bird of the Eastern United States (Trochilus colubris). Source: Websters Dictionary (01 Mar 1998) |
| rubywood | Red sandalwood. See Sandalwood. Source: Websters Dictionary (01 Mar 1998) |
| rubric |
Written instructions or explanation clarifying how individuals should act or respond; see also grading rubric.
출처: www.teach-nology.com/glossary/terms/r/
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| Rubin test |
Obsolete test in which a gas such as carbon dioxide is blown into the uterus under pressure to test if the fallopian tubes are open.
출처: www.infertilitycentral.com/fertility/infertility-g...
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| rub |
(Hunting) Where a deer or elk has staked out his territory by scraping away the bark of a small tree, leaving his individual scent behind.
출처: outdoorstore.espn.com/servlet/catalog.CFPage
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| Rubus |
The bramble genus.
출처: www.worldwideschool.org/library/books/sci/lifescie...
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| rubber |
(material) An elastomer capable of rapid elastic recovery. Specifically, natural rubber, the standard of comparison for elastomers.
출처: connectors.tycoelectronics.com/glossary/glossary-r...
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| rub | a contagious viral disease that is a milder form of measles lasting three or four days |
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| rub | a rare loss of mental and physical skills in adolescents |
| rub | prolific Flemish baroque painter |
| rub | an acute and highly contagious viral disease marked by distinct red spots followed by a rash |
| rub | type genus of the Rubiaceae |
| rub | perennial East Indian creeping or climbing herb used for dye in the orient |
| rub | Eurasian herb having small yellow flowers and red roots formerly an important source of the dye alizarin |
| rub | widely distributed family of mostly tropical trees and shrubs and herbs |
| rub | any of numerous trees or shrubs or vines of the family Rubiaceae |
| rub | an order of dicotyledonous plants of the subclass Asteridae |
| rub | a yellow or orange variety of ruby spinel |
| rub | a line that when crossed permits of no return and typically results in irrevocable commitment |