Kata bahasa Indonesia
English word
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WORDNET DICTIONARY
CIDE DICTIONARY
OXFORD DICTIONARY
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WORDNET DICTIONARY
Noun tracer has 4 senses
- tracer(n = noun.person) - an investigator who is employed to find missing persons or missing goods; is a kind of detective, investigator, police detective, tec
- tracer(n = noun.artifact) - an instrument used to make tracings; is a kind of instrument
- tracer(n = noun.artifact) - (radiology) any radioactive isotope introduced into the body to study metabolism or other biological processes; is a kind of radioisotope
- tracer(n = noun.artifact) tracer bullet - ammunition whose flight can be observed by a trail of smoke; is a kind of ammo, ammunition
Derived forms verb trace2, verb trace7
CIDE DICTIONARY
tracer, n.
- One who, or that which, traces. [1913 Webster]
- A person engaged (esp. in the express or railway service) in tracing, or searching out, missing articles, as packages or freight cars. [Webster 1913 Suppl.]
- An inquiry sent out (esp. in transportation service) for a missing article, as a letter or an express package. [Webster 1913 Suppl.]
- a type of ammunition that emits light or smoke as it moves toward its target, providing a visible path of the projectile in flight so that the point of impact may be observed; -- called also
tracer ammunition . [PJC] - the chemical substance used in tracer ammunition to cause it to be visible in flight. [PJC]
- a chemical substance with properties, such as radioactivity or fluorescence, which make it easily measurable, used to observe the movements of chemically related substances through a biological, physical, or chemical system; -- in biochemistry, also called
labeled compounds ."Radioactive tracers are used, for example, to measure the retention or distribution of residues of drugs after administration to an animal, to determine the type and rate of metabolism; also, to measure the rate of motion of molecules in electrophoresis or the leakage of small quantities of material from a container. Small fluorescent tracers may be attached in many cases to macromolecules such as proteins or nucleic acids, allowing the motions of such macromolecules to be easily observed by their acquired fluorescence, without appreciably changing their properties. In biological and biochemial systems the common radioactive isotopes used in tracers are carbon-14, tritium (hydrogen-3), sulfur-35, phosphorus-32, and iodine-131; other isotopes are also used, including non-radioactive isotopes such as carbon-13." [PJC]
OXFORD DICTIONARY
tracer, n.
1 a person or thing that traces.
2 Mil. a bullet etc. that is visible in flight because of flames etc. emitted.
3 an artificially produced radioactive isotope capable of being followed through the body by the radiation it produces.
1 a person or thing that traces.
2 Mil. a bullet etc. that is visible in flight because of flames etc. emitted.
3 an artificially produced radioactive isotope capable of being followed through the body by the radiation it produces.