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tracer

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noun trac·er \ˈtrā-sər\

Simple Definition of tracer

  • : a type of bullet that shows its path by creating smoke or light as it moves through the air

  • medical : a substance that is put in a patient's body so that doctors can watch a biological process (such as digestion) or see how a condition (such as cancer) is progressing

Source: Merriam-Webster's Learner's Dictionary

Full Definition of tracer

  1. 1 :  one that traces, tracks down, or searches out: asa :  a person who traces missing persons or property and especially goods lost in transitb :  an inquiry sent out in tracing a shipment lost in transit

  2. 2 :  one who traces designs, patterns, or markings

  3. 3 :  a device (as a stylus) used in tracing

  4. 4a :  ammunition containing a chemical composition to mark the flight of projectiles by a trail of smoke or lightb :  a substance used to trace the course of a chemical or biological process; especially :  label 3d

Examples of tracer in a sentence

  1. The enemy fired tracers at the aircraft carrier.

  2. They injected her with a radioactive tracer and tracked it via X-rays.



14th Century

First Known Use of tracer

14th century

Rhymes with tracer


Medical Dictionary

tracer

play
noun trac·er \ˈtrā-sər\

Medical Definition of tracer

  1. :  a substance used to trace the course of a process; specifically :  a labeled element or atom that can be traced throughout chemical or biological processes by its radioactivity or its unusual isotopic mass




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