tracer, n.
(tracers)
(tracers)
ammunition whose flight can be observed by a trail of smoke
<noun.artifact>
tracer tracer bullet
semantic pointers
hypernym
(radiology) any radioactive isotope introduced into the body to study metabolism or other biological processes
<noun.artifact>
tracer
an instrument used to make tracings
<noun.artifact>
tracer
semantic pointers
hypernym
an investigator who is employed to find missing persons or missing goods
<noun.person>
tracer
semantic pointers
hypernym