Dictionary Definition

tracer

1 an investigator who is employed to find missing persons or missing goods

2 an instrument used to make tracings

3 (radiology) any radioactive isotope introduced into the body to study metabolism or other biological processes

4 ammunition whose flight can be observed by a trail of smoke [syn: tracer bullet]

User Contributed Dictionary

A chemical used to track the progress or history of a natural process.
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.
The act of tracking or investigating something.
A person who traces something.

A chemical used to track the progress or history of a natural process

A piece of ammunition for a firearm that contains magnesium or another flammable substance

The act of tracking or investigating something

A person who traces something

Tracer may refer to:

Histochemical tracer, a substance used for tracing purposes in histochemistry, the study of the composition of cells and tissues
Isotopic tracer, a substance with an isotope that has been enriched to a greater level than that found in nature
Radioactive tracer, a substance containing a radioisotope that is used for tracking purposes
Flow tracer, any fluid property used to track fluid motion:
- Dye tracer
- In the ocean, salinity, potential temperature, and the concentration of many different chemical compounds
Tracer ammunition, special bullets that burn brightly to enable the shooter to follow the bullets' trajectories
Mercury Tracer, an automobile
Tracer (DC Comics), a DC Comics character
Tracer (Marvel Comics), a Marvel Comics supervillain
TRACER (magazine), a music magazine based out of Cincinnati, Ohio.

tracer in German: Tracer

tracer in French: Traceur

tracer in Dutch: Traceur

tracer in Japanese: トレーサー

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