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RADIOACTIVE
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I. (adjective)
Sense 1
Meaning:
Exhibiting or caused by radioactivity
Example:
radioactive fallout
Classified under:
Similar:
hot (having or dealing with dangerously high levels of radioactivity)
Antonym:
nonradioactive (not radioactive)
Derivation:
radioactivity (the spontaneous emission of a stream of particles or electromagnetic rays in nuclear decay)
Context examples:
A procedure in which a small amount of C-11 choline (a radioactive form of the vitamin choline) is injected into a vein.
(C-11 choline PET-CT scan, NCI Dictionary)
Nuclear scans use radioactive substances to see structures and functions inside your body.
(Nuclear Scans, NIH)
Radioactive octreotide, a drug similar to somatostatin, is injected into a vein and travels through the bloodstream.
(Octreotide scan, NCI Dictionary)
The amount of energy required to produce these temperatures is more than scientists think could be provided by decay of radioactive elements in the interior.
(Powering Saturn's Active Ocean Moon, NASA)
Images are made using a special machine that detects the radioactive substance.
(Nuclear medicine scan, NCI Dictionary)
This is the first unstable radioactive molecule definitively detected outside of the Solar System.
(Stellar Corpse Reveals Origin of Radioactive Molecules, ESO)
Scientists theorize that the decay of radioactive elements within Ceres produced heat that drove this alteration process, separating Ceres into a rocky interior and icy outer shell.
(Where is the Ice on Ceres?, NASA)
A radioactive substance being studied in PET imaging to detect certain types of cancer.
(C-11 choline, NCI Dictionary)
Labeling with the radioactive tracer carbon C 14 allows for evaluation of ixazomib's absorption, distribution, metabolism and excretion (ADME).
(Carbon C 14-labeled Ixazomib, NCI Thesaurus)
A radioactive form of carbon that is used in positron emission tomography (PET) scanning.
(Carbon-11 acetate, NCI Dictionary)
