tracer

Pronunciation: /ˈtɹeɪsɚ/

Estimated CEFR level: C2 — Proficiency

Estimated from word frequency; not an official CEFR classification.

Definition

  1. noun an investigator who is employed to find missing persons or missing goods
  2. noun an instrument used to make tracings
  3. noun (radiology) any radioactive isotope introduced into the body to study metabolism or other biological processes

Etymology

From trace + -er.

In classic literature

Semantic network

Broader (hypernyms)
detective

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