| PERK | prospective evaluation of radial keratotomy [protocol] |
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| PHAVER | pterygia-heart defects-autosomal recessive inheritance-vertebral defects-ear anomalies-radial defect... |
| Ra | radial; radium; radius |
| rad | radiation absorbed dose; radial; radian; radical; radius; root [Lat. radix] |
| RCM | radial contour model; radiographic contrast medium; red cell mass; reinforced clostridial medium; re... |
| recurrent nerve | <anatomy, nerve> A branch of a nerve (the vagus nerve) that comes down the neck and turns back ( recurs ) to supply the larynx (the voice box ). (12 Dec 1998) |
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| recurrent pneumonia in childhood | <radiology> IMMUNE PROBLEMS, immune deficiency, chronic granulomatous disease of childhood, alpha-1 antitrypsin deficiency, ASPIRATION, GE reflux, H-type TE fistula, disorder of swallowing, oesophageal obstruction, UNDERLYING LUNG DISEASE, sequestration, brochopulmonary dysplasia, cystic fibrosis, atopic asthma, bronchiolitis obliterans, sinusitis, bronchiectasis, ciliary dysmotility syndromes, pulmonary foreign body (12 Dec 1998) |
| recurrent polyserositis | Familial Mediterranean fever. (05 Mar 2000) |
| recurrent pyogenic cholangitis | Repeated attacks of cholangitis, commonly noted among Asians living in Asia, associated with the presence of multiple intrahepatic and extrahepatic bile duct stones and strictures. (05 Mar 2000) |
| recurrent scarring aphthae | A severe form of aphthae characterised by unusually numerous, large, deep, and frequent ulcers; healing may take as long as six weeks and results in scarring. Synonym: Mikulicz' aphthae, periadenitis mucosa necrotica recurrens, recurrent scarring aphthae, Sutton's disease. (05 Mar 2000) |
| recurrent stricture | A stricture due to the presence of contractile tissue which may be dilated but soon returns. Synonym: contractile stricture. (05 Mar 2000) |
| recurrent tetany | A simple autosomal recessive trait in Scottish terrier dogs, characterised by arching of the back and a stiff-legged gait due to overflexed hindlimbs and abducted forelimbs. Synonym: Scotch cramp. (05 Mar 2000) |
| recurrent ulcerative stomatitis | <dermatology> Roundish pearl-coloured specks or flakes in the mouth, on the lips, etc, terminating in white sloughs, better known as thrush and the specks are called aphthae. Synonym: thrush, candidiasis. Origin: Sing. Of Aphthae. L, fr. Gr. (mostly in pl, Hipp) an eruption, thrush, fr. To set on fire, inflame. (25 Jun 1999) |
| communicating branch of superior laryngeal nerve with recurrent laryngeal nerve | <anatomy, nerve> Branch of internal branch of superior laryngeal nerve communicating with the recurrent laryngeal nerve in the wall of the laryngopharynx supplying sensory fibres to the latter. Synonym: ramus communicans nervi laryngei recurrentis cum ramo laryngeo interno, ramus communicans nervi laryngei superioris cum nervo laryngeo recurrenti, Galen's anastomosis, Galen's nerve. (05 Mar 2000) |
| oesophageal branches of the recurrent laryngeal nerve | <anatomy, nerve> Supply motor and sensory fibres to cervical oesophagus on right side and to cervical and upper thoracic oesophagus on left. Synonym: rami oesophagei nervi laryngei recurrentis. (05 Mar 2000) |
| familial recurrent polyserositis | familial paroxysmal polyserositis |
| radial | <botany> Of or pertaining to a radius or ray; consisting of, or like, radii or rays; radiated; as, the radial artery. Radial symmetry. <biology> See Symmetry. Origin: Cf. F. Radial. See Radius. Source: Websters Dictionary (01 Mar 1998) |
| radial acceleration | The centripetal acceleration of a particle or vehicle moving along a curved path at a constant velocity; e.g., turning a curve in an automobile, pulling out of a dive, or performing a loop manoeuvre in an aircraft. In aviation, acceleration varies directly with the square of the air speed and inversely with the radius of the turn (a = V2/r, where V is air speed and r is radius of turn). (05 Mar 2000) |
| radial aplasia-thrombocytopenia syndrome | <syndrome> Aplasia (absence) of the radius (the long bone on the thumb-side of the forearm) and thrombocytopenia (low blood platelets) are key features characterizing this syndrome. There is phocomelia (flipper-limb) with the thumbs always present. The fibula (the smaller bone in the lower leg) is often absent. The risk of bleeding from too few platelets is high in early infancy but lessens with age. The condition is inherited in an autosomal recessive trait with one gene (on a non-sex chromosome) coming from each parent to the child affected with the disease. Alternative names include thrombocytopenia-absent radius syndrome, tar syndrome, and tetraphocomelia-thrombocytopenia syndrome. (12 Dec 1998) |
| radial border of forearm | An imaginary line running along the outermost extent of the forearm separating anterior and posterior surfaces laterally. Synonym: margo lateralis antebrachii, margo radialis antebrachii, radial border of forearm. (05 Mar 2000) |