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tracers'
2 dictionary results for: tracers'
American Heritage Dictionary - Cite This Source - Share This
trac·er     (trā'sər)  Pronunciation Key 
n.  
    1. One who is employed to locate missing goods or persons.
    2. An investigation or inquiry organized to trace missing goods or persons.
  1. Any of several instruments used in making tracings or in imprinting designs by tracing.
  2. A tracer bullet.
  3. An identifiable substance, such as a dye or a radioactive isotope, that is introduced into a biological or mechanical system and can be followed through the course of a process, providing information on the pattern of events in the process or on the redistribution of the parts or elements involved. Also called label.
The American Heritage Science Dictionary - Cite This Source - Share This
tracer   (trā'sər)  Pronunciation Key 
An identifiable substance, such as a dye or radioactive isotope, that can be followed through the course of a mechanical, chemical, or biological process. Tracers are used in radioimmunoassays and other laboratory testing. The use of radioactive iodine, for example, can give information about thyroid gland metabolism. Also called label.

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