tracer

valojuova-ammus, valojuovaluoti

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merkkiaine puhekieltä A chemical used to track the progress or history of a natural process.
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.
The act of tracking or investigating something.
A person who traces something.
puhekieltä to draw or plot (a diagram), to trace out
puhekieltä to rule (a line)
puhekieltä to buck up, hurry up