Dictionary
tracer
noun trac·er \ˈtrā-sər\
: a type of bullet that shows its path by creating smoke or light as it moves through the air
medical : a substance that is put in a patient's body so that doctors can watch a biological process (such as digestion) or see how a condition (such as cancer) is progressing
Full Definition of TRACER
1
2
: one who traces designs, patterns, or markings
3
: a device (as a stylus) used in tracing
4
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First Known Use of TRACER
14th century
Medical Dictionary
tracer
noun trac·er \ˈtrā-sər\
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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