tracer has definitions from the fields of military,arms,chemistry,physics,medicine,pharmacology,radiology,law
1
[ noun ] (radiology) any radioactive isotope introduced into the body to study metabolism or other biological processes
2
[ noun ] an instrument used to make tracings

Related terms

instrument trace

3
[ noun ] (law) an investigator who is employed to find missing persons or missing goods

Related terms

detective

4
[ noun ] (military,arms) ammunition whose flight can be observed by a trail of smoke

Synonyms

tracer_bullet

Related terms

ammunition

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