| radio telemetry |
Telemetry by use of radio waves. |
| radio telephony |
The transmission of speech using modulated radio waves |
| radio telescope |
a device for studying astronomical sources of radio waves; normally has one or more large parabolic dishes |
| radio wave |
electromagnetic radiation having a wavelength between about .5 centimeters and 30,000 meters; used for the broadcasting of radio and television signals. |
| radioacoustics |
the study of the acoustics of sounds as carried and reproduced by radio |
| radioactinium |
The radioactive isotope of actinium, , having a half-life of 21.7 years |
| radioactive |
Exhibiting radioactivity. |
| radioactive decay |
Any of several processes by which unstable nuclei emit subatomic particles and/or ionizing radiation and disintegrate into one or more smaller nuclei. |
| radioactive fallout |
material settling from a radioactive plume, and its subsequent surface deposition |
| radioactive tracer |
,, a radioactive isotope which, when injected into a chemically similar substance, or artificially attached to a biological or physical system, can be traced by radiation detection devices |
| radioactive waste |
A waste type containing radioactive chemical elements that does not have a practical purpose. |
| radioactively |
Using a radioactive substance |
| radioactivity |
Spontaneous emission of radiation as a consequence of a nuclear reaction, or directly from the breakdown of an unstable nucleus. |
| radioassay |
an assay of an ore or some other radioactive sample to determine the intensity of its radiation |
| radiobicipital |
Of or pertaining to the radius and the biceps |
| radiobioassay |
The analysis of radioactive material in the body or excreta |
| radiobioassays |
|
| radiobiology |
The study of the effects of ionizing radiation on living organisms |
| radiobroadcast |
To broadcast by radio |
| radiobroadcasts |
|
| radiocarbon |
A radioactive isotope of carbon, especially |
| radiocarbon dating |
, (archeology) a method of estimating the age of an artefact based on the relative amounts of the different isotopes of carbon present in a sample |
| radiocardiogram |
An X-ray recording of the progress of radioactive material injected into the chambers of the heart |
| radiocardiograms |
|
| radiochemistry |
the chemistry of radioactive substances |
| radiochromatography |
Any form of chromatography in which the separated zones are detected by their radioactivity |
| radiochronology |
A technique in which the absolute age of an artefact is determined by measuring the ratios of specific radioactive isotopes |
| radiocolloid |
Any colloid, one or more of whose components is radioactive |
| radiocolloids |
|
| radiocommunication |
Any means of communication using radio or other electromagnetic waves |
| radiocommunications |
|
| radiodense |
radiopaque |
| radiodensity |
The relative transparency of a material to X-rays and other radiation |
| radiodermatitis |
dermatitis caused by ionizing radiation |
| radiodontia |
the radiography of teeth, gums, jaw etc |
| radioecology |
the study of the fate and effects of radioactive materials in the environment |
| radioed |
|
| radioelement |
Any radioactive element |
| radioelements |
|
| radio-frequency |
Of or pertaining to electromagnetic radiation in the radio frequency band of the spectrum. |
| radiogenetics |
the study of the genetic effects of radiation |
| radiogenic |
Of, pertaining to, or caused by radioactive |
| radiogeology |
The study of the distribution of radioactive elements in the Earth's crust |
| radioglaciology |
The study of glaciers and ice sheets using radar. |
| radiogold |
The radioactive isotope of gold, , used in medical irradiation and in diagnosis |
| radiogolds |
|
| radiogoniometer |
A goniometer used in radio direction finding |
| radiogoniometers |
|
| radiogoniometry |
the measurement of the azimuth and elevation of received radio waves |
| radiogram |
A message, like a telegram, transmitted by radio rather than wires. |
