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Tracer

/ˈtɹeɪsə(ɹ)/

A compound, element, or isotope used to track the progress or history of a natural process.

📖 Definitions of "Tracer"

noun

1
A compound, element, or isotope used to track the progress or history of a natural process.
2
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.
3
The act or state of tracking or investigating something.
4
A request to trace the movements of a person or an object, such as a shipment.

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