tracer

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

bracer, chaser, facer, pacer, placer, racer, spacer