tracer
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3 ENTRIES FOUND:

trac·er

noun \ˈtrā-sər\

Definition of TRACER

1
: one that traces, tracks down, or searches out: as
a : a person who traces missing persons or property and especially goods lost in transit
b : an inquiry sent out in tracing a shipment lost in transit
2
: one who traces designs, patterns, or markings
3
: a device (as a stylus) used in tracing
4
a : ammunition containing a chemical composition to mark the flight of projectiles by a trail of smoke or light
b : a substance used to trace the course of a chemical or biological process; especially : label 3d

Examples of TRACER

  1. The enemy fired tracers at the aircraft carrier.
  2. They injected her with a radioactive tracer and tracked it via X-rays.

First Known Use of TRACER

14th century

Rhymes with TRACER

trac·er

noun \ˈtrā-sər\   (Medical Dictionary)

Medical Definition of TRACER

: a substance used to trace the course of a process; specifically : a labeled element or atom that can be traced throughout chemical or biological processes by its radioactivity or its unusual isotopic mass

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