| rough-legged | <zoology> Having the legs covered with feathers; said of a bird. Rough-legged hawk. <zoology> See Roughleg. Source: Websters Dictionary (01 Mar 1998) |
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| rough-surfaced endoplasmic reticulum | Endoplasmic reticulum in which ribosomal granules are applied to the cytoplasmic surface of the cisternae; involved in the synthesis and secretion of protein via membrane-bound vesicles to the extracellular space. Synonym: chromidial substance, ergastoplasm, rough-surfaced endoplasmic reticulum. (05 Mar 2000) |
| roughage | 1. Anything in the diet, e.g., bran, serving as a bulk stimulant of intestinal peristalsis. 2. Hay or other coarse feed fed to cattle and other herbivores. (05 Mar 2000) |
| roughcast | 1. To form in its first rudiments, without revision, correction, or polish. 2. To mold without nicety or elegance; to form with asperities and inequalities. 3. To plaster with a mixture of lime and shells or pebbles; as, to roughcast a building. Source: Websters Dictionary (01 Mar 1998) |
| roughhead | <zoology> The redfin. Source: Websters Dictionary (01 Mar 1998) |
| roughhew | 1. To hew coarsely, without smoothing; as, to roughhew timber. 2. To give the first form or shape to; to form rudely; to shape appromaxitely and rudely; to roughcast. "There's a divinity that shapes our ends, Roughhew them how we will." (Shak) Source: Websters Dictionary (01 Mar 1998) |
| roughleg | <zoology> Any one of several species of large hawks of the genus Archibuteo, having the legs feathered to the toes. Synonym: rough-legged hawk, and rough-legged buzzard. The best known species is Archibuteo lagopus of Northern Europe, with its darker American variety (Sancti-johannis). The latter is often nearly or quite black. The ferruginous roughleg (Archibuteo ferrugineus) inhabits Western North America. Source: Websters Dictionary (01 Mar 1998) |
| roughstrings | Pieces of undressed timber put under the steps of a wooden stair for their support. Source: Websters Dictionary (01 Mar 1998) |
| roughtail | <zoology> Any species of small ground snakes of the family Uropeltidae; so called from their rough tails. Source: Websters Dictionary (01 Mar 1998) |
| Roughton, Francis | <person> British scientist, 1899-1972. See: Roughton-Scholander apparatus, Roughton-Scholander syringe. (05 Mar 2000) |
| Roughton-Scholander apparatus | A syringe-like device for analyzing the respiratory gases in a small sample of blood. Synonym: Roughton-Scholander syringe. (05 Mar 2000) |
| Roughton-Scholander syringe | A syringe-like device for analyzing the respiratory gases in a small sample of blood. Synonym: Roughton-Scholander syringe. (05 Mar 2000) |
| Rougnon de Magny, Nicholas | <person> French physician, 1727-1799. See: Rougnon-Heberden disease. (05 Mar 2000) |
| Rougnon-Heberden disease | A paroxysmal thoracic pain, with a failing of suffocation and impending death, due, most often, to anoxia of the myocardium and precipitated by effort or excitement. (18 Nov 1997) |
| rouleaux | <haematology> Cylindrical masses of red blood cells. Horse blood will spontaneously form rouleaux, in other species it can be induced by reducing the repulsion forces between erythrocytes. (17 Dec 1997) |