Welcome to the new LearnersDictionary.com. We want to hear your thoughts about the new design.

tracer

1 ENTRIES FOUND:
Save
tracer/ˈtreɪsɚ/noun
pluraltracers
tracer
/ˈtreɪsɚ/
noun
pluraltracers
Learner's definition of TRACER  
[count]
: 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
Comments & Questions  
Comments & Questions
What made you want to look up tracer? Include any comments and questions you have about this word.