rastreador
1. a person or device that traces or follows something
The tracer followed the package through the delivery system.
O rastreador acompanhou o pacote através do sistema de entrega.
2. a bullet or projectile containing a substance that burns brightly to show its trajectory
The tracer ammunition illuminated the night sky during the military exercise.
A munição traçante iluminou o céu noturno durante o exercício militar.
3. a radioactive or fluorescent substance used to track movement in medical or scientific contexts
The doctor used a radioactive tracer to monitor kidney function.
O médico usou um marcador radioativo para monitorar a função renal.
4. a person employed to investigate or locate someone or something
A tracer was hired to locate the missing heir.
Um investigador foi contratado para localizar o herdeiro desaparecido.
In military and law enforcement contexts, tracer rounds are commonly referenced in both American and Brazilian Portuguese. In medical settings, the use of radioactive tracers is a standard diagnostic procedure in both countries. The term is also used in modern logistics and e-commerce to describe tracking systems for packages.
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