| radiculoneuropathy | Disease of the spinal nerve roots and nerves. (05 Mar 2000) |
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| radiculopathy | <pathology> A herniated intervertebral disk (nucleus pulposus) is one which has become displaced (prolapsed) from its normal position in between the vertebral bodies of the spine. Herniated disks often impinge on nearby nerve structures resulting in pain and neurologic symptoms. A clinical situation where the radicular nerve (nerve root) is compressed by the prolapsed disk is referred to as a radiculopathy. This problem tends to occur most commonly in the cervical and lumbar spine. Origin: Gr. Pathos = disease (27 Sep 1997) |
| radiculose | <botany> Producing numerous radicles, or rootlets. Source: Websters Dictionary (01 Mar 1998) |
| radiectomy | Synonym: root amputation. Origin: L. Radix, root, + G. Ektome, excision (05 Mar 2000) |
| radiesthesia | Therapeutic cult concerned with intangible energies surrounding the living body and based on the detection of these intrinsic radiations by dowsing, or divining, or the use of more elaborate instruments (radionics). (12 Dec 1998) |
| radiferous | Containing radium. (05 Mar 2000) |
| radii | Plural of radius. Origin: L. (05 Mar 2000) |
| radii lentis | 9 to 12 faint lines on the anterior and posterior surfaces of the lens that radiate from the poles toward the equator; they mark the lines along which the ends of lens fibres abut. Synonym: lens stars, lens sutures. (05 Mar 2000) |
| radio | 1. <physics> The transmission and reception of electric impulses or signals by means of electric waves without a connecting wire, or the use of these waves for the wireless transmission of electric impulses into which sound is converted. 2. <anatomy, prefix> A combining form indicating connection with, or relation to, a radius or ray; specifically, with the radius of the forearm; as, radio-ulnar, radiomuscular, radiocarpal. Origin: L. Radius, ray (21 Jun 2000) |
| radio frequency current drive | <radiobiology> Plasma waves in the radio-frequency range can be used to push plasma particles in such a way that current forms in the plasma, this is a method of non-inductive current drive which would allow for steady-state fusion reactors to operate. (09 Oct 1997) |
| radio frequency heating | <radiobiology> Process for heating the plasma by transferring energy to ions or electrons using waves generated by an external oscillator at an appropriate frequency. (This is similar to how a microwave oven heats food.) There are various types: See: ECRH, ICRH, and Lower Hybrid. (09 Oct 1997) |
| radio frequency or radiofrequency | <physics> Term used to describe electromagnetic radiation with frequencies less than infrared, but greater than audio frequencies, i.e., greater than about 15,000 Hz. Wavelengths are therefore less than about 20,000 km and greater than about 0.01 mm. (These numbers are not precise.) (09 Oct 1997) |
| radio label | A mildly radioactive molecule that is used to tag another molecule (such as a protein) so that it can be identified as it goes through some kind of biochemical process. (09 Oct 1997) |
| radio wave | <physics> Electromagnetic radiation with wavelengths of 300 millimetres or longer (even up to several kilometres). Radiation of this type is used to broadcast radio and television signals, and has frequencies up to thousands of megahertz (or one gigahertz). (09 Oct 1997) |
| radio waves | That portion of the electromagnetic spectrum beyond the microwaves, with wavelengths as high as 30 km. They are used in communications, including television. Short wave or hf (high frequency), uhf (ultrahigh frequency) and vhf (very high frequency) waves are used in citisen's band communication. (12 Dec 1998) |
Synonyms : Radioimmunoassays
Synonyms : Immunoscintigraphy, Radiolabelled, Radiolabeled Immunoscintigraphy, Radiolabelled Immunoscintigraphy, Immunoscintigraphies, Radiolabeled, Immunoscintigraphies, Radiolabelled, Radioimmunodetections, Radioimmunoimagings, Radioimmunoscintigraphies
Synonyms : Analyses, Radioimmunoprecipitation, Analysis, Radioimmunoprecipitation, Assay, Farr, Assay, Radioimmunoprecipitation, Assays, Radioimmunoprecipitation, Radioimmunoprecipitation Analyses, Radioimmunoprecipitation Assays
Synonyms : Radioimmunosorbent Tests, Test, Radioimmunosorbent, Tests, Radioimmunosorbent
Synonyms : Immunoradiotherapy, Immunoradiotherapies, Radioimmunotherapies
| radiosensitizer |
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| radiotropic |
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| radiostereoscopy |
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| radiotropism |
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| radiothanatology |
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| rad | an electronic receiver that detects and demodulates and amplifies transmitted signals |
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| rad | a radio wave used to transmit and receive messages |
| rad | an object that radiates radio waves |
| rad | the entire spectrum of electromagnetic frequencies used for communications |
| rad | station for the production and transmission of radio broadcasts |
| rad | astronomical telescope that picks up electromagnetic radiations in the radio-frequency range from extra-terrestrial sources |
| rad | transmitter that is the part of a radio system that transmits signals |
| rad | an electromagnetic wave with a wavelength between 0.5 cm to 30,000 m |
| rad | operated and guided by radio |
| rad | an aircraft without a pilot that is operated by remote control |
| rad | the entire spectrum of electromagnetic frequencies used for communications |
| rad | electronic equipment consisting of a combination of a radio receiver and a record player |