| risk-taking | Undertaking a task involving a challenge for achievement or a desirable goal in which there is a lack of certainty or a fear of failure. It may also include the exhibiting of certain behaviours whose outcomes may present a risk to the individual or to those associated with him or her. (12 Dec 1998) |
|---|---|
| risks, obesity-related | Obesity increases the risk of developing a number of diseases including: type 2 (adult-onset) diabetes high blood pressure (hypertension) stroke (cerebrovascular accident or cva) heart attack (myocardial infarction or mi) heart failure (congestive heart failure) cancer (only certain forms such as prostate and colon cancer) gallstones and gall bladder disease (cholecystitis) gout and gouty arthritis osteoarthritis (degenerative arthritis) of the knees, hips, and the lower back sleep apnea (failure to breath normally during sleep, lowering blood oxygen) pickwickian syndrome (obesity, red face, underventilation, and drowsiness) (12 Dec 1998) |
| Risley's rotary prism | A prism with a circular base that is rotated in a metal frame marked with a scale; used in examination of ocular muscle imbalance. (05 Mar 2000) |
| Risley, Samuel | <person> U.S. Ophthalmologist, 1845-1920. See: Risley's rotary prism. (05 Mar 2000) |
| risorial | Pertaining to, or producing, laughter; as, the risorial muscles. Origin: L. Ridere, risum, to laugh. Source: Websters Dictionary (01 Mar 1998) |
| risorius | <anatomy, muscle> Origin, from platysma and fascia of masseter; insertion, orbicularis oris and skin at corner of mouth; action, draws angle of mouth laterally, lenghthening rima oris; nerve supply, facial. Synonym: musculus risorius, Albinus' muscle, Santorini's muscle. Origin: L. Risor, a laughter, fr. Rideo, pp. Risus, to laugh (05 Mar 2000) |
| risperidone | This antipsychotic drug is used to treat schizophrenia. (09 Oct 1997) |
| rissoid | <zoology> Any one of very numerous species of small spiral gastropods of the genus Rissoa, or family Rissoidae, found both in fresh and salt water. Origin: NL. Rissoa, the typical genus (fr. A.Risso, an Italian naturalist). Source: Websters Dictionary (01 Mar 1998) |
| rissole | A small ball of rich minced meat or fish, covered with pastry and fried. Origin: F, fr. Rissoler to fry meat till it is brown. Source: Websters Dictionary (01 Mar 1998) |
| RIST | <abbreviation> Radioimmunosorbent test. (05 Mar 2000) |
| ristocetin | <protein> Mixture of ristocetins A & B: isolated from actinomycete, Nocardia lurida. Induces platelet aggregation. (18 Nov 1997) |
| risus caninus | The semblance of a grin caused by facial spasm especially in tetanus. Synonym: canine spasm, cynic spasm, risus sardonicus, sardonic grin, spasmus caninus, trismus sardonicus. Origin: L. Risus, laugh + caninus, doglike (05 Mar 2000) |
| risus sardonicus | Synonym: risus caninus. Origin: L. Risus, laughter, + sardonicus, fr. G. Sardanios, scornful, infl. By sardonios, Sardinian, ref. To effects of Strychnos nux-vomica, poisonous herb fr. Sardinia (05 Mar 2000) |