| rad | radiation absorbed dose; radial; radian; radical; radius; root [Lat. radix] |
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| RCM | radial contour model; radiographic contrast medium; red cell mass; reinforced clostridial medium; re... |
| RD | radial deviation; radiology department; rate difference; Raynaud disease; reaction of degeneration; ... |
| REAR | renal, ear, anal, and radial [malformation syndrome] |
| RF | radial fiber; radio frequency; receptive field; regurgitant fraction; Reitland-Franklin [unit]; rela... |
| ulnar communicating branch of superficial radial nerve | <anatomy, nerve> Ulnar communicating branch of superficial branch of radial nerve, joining the dorsal branch of the ulnar nerve in the hand conveying sensation from the dorsal aspect of adjacent sides of the middle and ring fingers. Synonym: ramus communicans ulnaris nervi radialis. (05 Mar 2000) |
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| keratotomy, radial | A procedure to treat myopia by cutting radial slits into the cornea to flatten it and thereby change its refractive properties. (12 Dec 1998) |
| fovea of the radial head | The depression on the top (superior surface) of the head of the radius for articulation with the capitulum of the humerus. Synonym: fovea articularis capitis radii, articular pit of head of radius. (05 Mar 2000) |
| long radial extensor muscle of wrist | <anatomy, muscle> Origin, lateral supracondylar ridge of humerus; insertion, back of base of second metacarpal bone; action, extends and deviates wrist radialward; nerve supply, radial. Synonym: musculus extensor carpi radialis longus, long radial extensor muscle of wrist. (05 Mar 2000) |