| / English Dictionary |
RADIOACTIVE MATERIAL
| Pronunciation (US): |  | (GB): | |
I. (noun)
Sense 1
Meaning:
Material that is radioactive
Classified under:
Hypernyms ("radioactive material" is a kind of...):
material; stuff (the tangible substance that goes into the makeup of a physical object)
Hyponyms (each of the following is a kind of "radioactive material"):
radioactive waste (useless radioactive materials that are left after some laboratory or commercial process is completed)
Context examples:
A type of radiation therapy in which radioactive material sealed in needles, seeds, wires, or catheters is placed directly into or near a tumor.
(Brachytherapy, NCI Dictionary)
A very small amount of radioactive material is injected into a vein and travels through the blood.
(Bone scan, NCI Dictionary)
When radioactive material is used to examine the thyroid with a scanner, nodules that collect less radioactive material than the surrounding thyroid tissue are considered "cold."
(Cold nodule, NCI Dictionary)
A unit of radioactive decay expressed in atoms of radioactive material that decay over a period of time equal to one second.
(Disintegration per Second, NCI Thesaurus)
A technique used to locate radioactively labeled molecules, or fragments of molecules, by recording on a photographic or sensor plate the radiation emitted by radioactive material within a molecule.
(Autoradiography, NCI Thesaurus)
A mechanical, electrical, or chemical device with sensor properties, that automatically identifies and records or registers a stimulus, such as change in pressure or temperature or content, movement, an electrical signal, radiation from a radioactive material or presence of subatomic particles, etc.
(Detector, NCI Thesaurus)
Monoclonal antibodies have become powerful tools for tumor targeting, recognizing different protein markers on certain cancer cells and may be used alone or as delivery agents for drugs, toxins or radioactive material targeted to tumors.
(Anti-Idiotype Specified Monoclonal Antibody, NCI Thesaurus)
A therapeutic procedure involving the insertion of an inflatable balloon catheter filled with radioactive material into a resection cavity in order to deliver radiation to any remaining cancer cells in and around the tumor bed.
(Balloon Brachytherapy, NCI Thesaurus)
If enough radioactive material accumulates in an asteroid, the heat produced as it decays will be sufficient to melt ice inside the asteroid.
(Vitamin B3 might have been made in space, delivered to Earth by meteorites, NASA)
The radioactive material collects in the bones and is detected by a scanner (a special camera that takes pictures of the inside of the body).
(Bone scan, NCI Dictionary)
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