tracer
pronunciation
How to pronounce tracer in British English:
UK [ˈtreɪsə(r)]
How to pronounce tracer in American English:
US ['treɪsər]
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- Noun:
- an investigator who is employed to find missing persons or missing goods
- an instrument used to make tracings
- (radiology) any radioactive isotope introduced into the body to study metabolism or other biological processes
- ammunition whose flight can be observed by a trail of smoke
Word Origin
- tracer (n.)
- c. 1500, "one who tracks or searches," agent noun from verb form of trace (n.1). Meaning "bullet whose course is made visible" is from 1910.
Example
- 1. Overhead , red tracer bullets darted into a black sky .
- 2. A tracer aided study on silicon chemistry in biological systems .
- 3. Breakthrough curves of tracer particle in models with different depths and widths .
- 4. The tracer is distributed in a nearly normal fashion .
- 5. They used a tracer gas to measure warm air infiltration .