instrument the means whereby some act is accomplished; "my greed was the instrument of my destruction"; "science has given us new tools to fight disease"
tracer -
(radiology) any radioactive isotope introduced into the body to study metabolism or other biological processes
radioisotope a radioactive isotope of an element; produced either naturally or artificially
tracer -
ammunition whose flight can be observed by a trail of smoke
tracer -
an investigator who is employed to find missing persons or missing goods
= synonym
= antonym
= relatert ord
Wiktionary
Substantiv
tracer -
A chemical used to track the progress or history of a natural process.
tracer -
A piece of ammunition for a firearm that contains magnesium or another flammable substance arranged such that it will burn and produce a visible trail when fired at night.
tracer -
The act of tracking or investigating something.
