| river | 1. <ecology> A large stream of water flowing in a bed or channel and emptying into the ocean, a sea, a lake, or another stream; a stream larger than a rivulet or brook. "Transparent and sparkling rivers, from which it is delightful to drink as they flow." (Macaulay) 2. A large stream; copious flow; abundance; as, rivers of blood; rivers of oil. River chub, any one of numerous fresh water tortoises inhabiting rivers, especially those of the genus Trionyx and allied genera. See Trionyx. Origin: F. Rivere a river, LL. Riparia river, bank of a river, fr. L. Riparius belonging to a bank or shore, fr. Ripa a bank or shore; of uncertain origin. Cf. Arrive, Riparian. Source: Websters Dictionary (01 Mar 1998) |
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| river blindness | Ocular complications, such as keratitis, iridocyclitis, or retrobulbar neuritis, caused by the microfilariae of Onchocerca volvulus. Synonym: river blindness. (05 Mar 2000) |
| river-type fish | <marine biology> Anadromous fish that rear for a year or more in rivers. (23 Aug 1998) |
| Rivero-Carvallo effect | Inspiratory increase in the systolic murmur of tricuspid insufficiency; the characteristic distinguishing tricuspid insufficiency from mitral insufficiency. (05 Mar 2000) |
| Rivero-Carvallo, Jose Manuel | <person> Mexican cardiologist, *1905. See: Carvallo's sign, Rivero-Carvallo effect. (05 Mar 2000) |
| Rivers' cocktail | An intravenous slow injection of from 1000 to 2000 ml of 10% dextrose in isotonic saline to which thiamine hydrochloride and 25 units of insulin are added; used in acute alcoholism. Synonym: Philadelphia cocktail. (05 Mar 2000) |
| Rivers, William | <person> English physician, 1864-1922. See: Rivers' cocktail. (05 Mar 2000) |
| Ross River fever | A mild febrile illness of humans in Australia characterised by polyarthralgia and rash, caused by the Ross River virus, a member of the family Togaviridae, and transmitted by mosquitoes. Synonym: epidemic exanthema, Murray Valley rash, Ross River fever. (05 Mar 2000) |
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| ross river virus | A species of alphavirus associated with epidemic exanthema and polyarthritis in Australia. (12 Dec 1998) |
| Japanese river fever | See Typhus, scrub. (12 Dec 1998) |