Added 9 October 2026
tracer
/ˈtɹeɪsə(ɹ)/ noun
noun Definition from WordNet 3.1, Princeton University. Pronunciation from Wiktionary, via Kaikki.org. More about tracer at Wordnik → Where our words come from →
- An investigator who is employed to find missing persons or missing goods.
- An instrument used to make tracings.
- (radiology) any radioactive isotope introduced into the body to study metabolism or other biological processes.
Origin
From trace + -er.
From Wiktionary, via Kaikki.org (CC BY-SA)