tracer

tracer Definition

tracer (trās′ər)

noun

a person or thing that traces; specif.,
1. a person whose work is tracing drawings, designs, etc. on transparent paper
2. a person whose work is tracing lost or missing articles, persons, etc.
3. an instrument for tracing designs on cloth, etc.
☆ an inquiry sent out for a letter, package, etc. that is missing in transport
ammunition that traces its own course in the air with a trail of smoke or fire, so as to facilitate adjustment of the aim
a substance, usually a radioactive isotope, used to follow a chemical process or a complex sequence of biochemical reactions (as in an animal body), to locate diseased cells and tissues, to determine physical properties, etc.
a thread of contrasting color woven into or stamped on wire insulation for identification and for aid in tracing a circuit

tracer Usage Examples

Preposition: of

line: Opinion please one more a greater image for the samples of the color of the options of the tracer of lines.

Converse of object

use: We now sketch a simple strategy for using the tracer which copes with several of the symptom s described above.
inject: We impose an artificial change in the thermal forcing and inject a tracer into the NW Atlantic.
label: This allows the labeled tracer to be prepared in advance and injected into a patient at any time over the subsequent six hours.

Adjective modifier

isotopic: Using isotopic tracers, it was initially found that N & C atoms of heme are derived from glycine and acetate.
radioactive: Bone scans use a tiny amount of radioactive tracer to show up ' hot spots ' in the bones.
passive: A number of passive tracers will also be included in the 17 year integration.
good: There is the further problem that radiation emitted is not a good tracer of mass, which is what we are most interested in.
inert: The first was marked with the inert tracer SF 6.
stable: Mass spectrometry is used both as an analytical tool and for metabolic studies using stable isotope tracers.

Modifies a noun

bullet: On one occasion a machine gun was also being used firing tracer bullets.
experiment: Experimental data from the tracer experiments can be found here.
particle: Running time: Typical running times mostly depend on the shape of the tracer particle.
gas: This forces the tracer gas through any small leaks.
technique: Ventilation in enclosed or mechanically ventilated areas can also be assessed using tracer gas techniques.
fire: Suddenly I saw red tracer fire coming from our rear.

Noun used with modifier

isotope: Mass spectrometry is used both as an analytical tool and for metabolic studies using stable isotope tracers.
ray: The ray tracer will be launched several times passing each time a number that selects the image in the sequence to be produced.
chemical: Is caffeine suitable for use as a chemical tracer?
dye: The fluctuating flows which transport sediment and create dune movement have been difficult to visualize using conventional dye tracers.

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