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6 definitions found

From: DICT.TW English-Chinese Dictionary 英漢字典

 trac·er /ˈtresɚ/

From: DICT.TW English-Chinese Medical Dictionary 英漢醫學字典

 trac·er /ˈtresɚ/ 名詞

From: Taiwan MOE computer dictionary


From: Network Terminology


From: Webster's Revised Unabridged Dictionary (1913)

 Tra·cer n. One who, or that which, traces.
 2. A person engaged (esp. in the express or railway service) in tracing, or searching out, missing articles, as packages or freight cars.
 3.  An inquiry sent out (esp. in transportation service) for a missing article, as a letter or an express package.

From: WordNet (r) 2.0

      n 1: an investigator who is employed to find missing persons or
           missing goods
      2: an instrument used to make tracings
      3: (radiology) any radioactive isotope introduced into the body
         to study metabolism or other biological processes
      4: ammunition whose flight can be observed by a trail of smoke
         [syn: tracer bullet]