Associations to the word «Tracer»

Wiktionary

TRACER, noun. (chemistry) A chemical used to track the progress or history of a natural process.
TRACER, noun. A round 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 in the dark.
TRACER, noun. The act of tracking or investigating something.
TRACER, noun. A person who traces something.

Dictionary definition

TRACER, noun. An investigator who is employed to find missing persons or missing goods.
TRACER, noun. An instrument used to make tracings.
TRACER, noun. (radiology) any radioactive isotope introduced into the body to study metabolism or other biological processes.
TRACER, noun. Ammunition whose flight can be observed by a trail of smoke.

Wise words

A word is not a crystal, transparent and unchanged; it is the skin of a living thought and may vary greatly in color and content according to the circumstances and time in which it is used.
Oliver Wendell Holmes, Jr.