tracer

  1. Noun.  (chemistry) A chemical used to track the progress or history of a natural process.
  2. Noun.  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.
  3. Noun.  The act of tracking or investigating something.
  4. Noun.  A person who traces something.

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This entry was last updated on RefTopia from its source on 3/20/2012.