English noun: tracer |
1. | tracer (person) an investigator who is employed to find missing persons or missing goods |
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| Broader (hypernym) | detective, investigator, police detective, tec |
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2. | tracer (artifact) an instrument used to make tracings |
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| Broader (hypernym) | instrument |
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3. | tracer (artifact) (radiology) any radioactive isotope introduced into the body to study metabolism or other biological processes |
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| Broader (hypernym) | radioisotope |
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| Domain category | radiology |
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4. | tracer (artifact) ammunition whose flight can be observed by a trail of smoke |
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| Synonyms | tracer bullet |
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| Broader (hypernym) | ammo, ammunition |
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