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Tracer (Noun)

Meaning 1

Ammunition whose flight can be observed by a trail of smoke.

Classification

Nouns denoting man-made objects.

Examples

  • The military used tracer rounds to track the trajectory of their bullets in low-light conditions.
  • Tracer ammunition helped the pilots to aim accurately at their targets during the nighttime mission.
  • The rifle squad fired tracer rounds to mark the location of the enemy bunker for an airstrike.
  • The sniper's use of tracer bullets revealed his position to the enemy, forcing him to relocate quickly.
  • Machine gunners relied on tracers to adjust their aim and hit moving targets more effectively.

Synonyms

  • Tracer Bullet

Hypernyms

  • Ammo

Meaning 2

An instrument used to make tracings.

Classification

Nouns denoting man-made objects.

Examples

  • The artist held the pencil tracer tightly in her hand as she drew a precise outline of the intricate design.
  • She positioned the tracer at the right angle on the model, carefully recording the measurements for the project.
  • A pantograph tracer was necessary to ensure accurate scaling when transferring the image.
  • The architects used a tracing machine with a mounted tracer that consisted of a ballpoint pen on a swiveling arm.
  • By using a flexible-curve tracer the engineer was able to easily record the irregular shape of the pipe.

Related Words

  • Trace (verb)

Meaning 3

An investigator who is employed to find missing persons or missing goods.

Classification

Nouns denoting people.

Examples

  • The experienced private tracer was known for her ability to locate even the most elusive missing persons.
  • After years of no leads, the desperate family hired a professional tracer to find their missing daughter.
  • As a skilled tracer, she was able to track down the stolen goods and recover them for the insurance company.
  • Following a careful investigation, the tracer discovered the identity of the missing goods' thief and notified the authorities.
  • With advanced research and surveillance techniques, the tracer was finally able to pinpoint the location of the missing person.

Hypernyms

  • Police Detective
  • Investigator
  • Tec

Meaning 4

(radiology) any radioactive isotope introduced into the body to study metabolism or other biological processes.

Classification

Nouns denoting man-made objects.

Examples

  • Technetium-99m is commonly used as a tracer in nuclear medicine to diagnose various diseases, such as cancer and bone disorders.
  • The patient received a small injection of a radioactive tracer before undergoing a positron emission tomography scan.
  • Researchers used carbon-14 as a tracer to study the metabolism of glucose in the body.
  • After administering the tracer, the doctor monitored the patient's progress using a series of PET scans.
  • Gallium-67 citrate is sometimes used as a tracer to detect and monitor certain types of infections or tumors.
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