tracer

Words with a similar base: tracer, tracer_bullet

'tracer'

[tracer.n.01] as in: an investigator who is employed to find missing persons or missing goods

'tracer'

[tracer.n.02] as in: an instrument used to make tracings

'tracer'

[tracer.n.03] as in: (radiology) any radioactive isotope introduced into the body to study metabolism or other biological processes

'tracer'

[tracer.n.04] as in: ammunition whose flight can be observed by a trail of smoke

Origins

					tracer (English)
├── -er (English)
│   ├── -er (Middle English (1100-1500))
│   ├── -eren (Middle English (1100-1500))
│   ├── -or (Old English (ca. 450-1100))
│   └── -ra (Old English (ca. 450-1100))
└── trace (English)

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