Definition of performance-enhancing adjective from the Oxford Advanced American Dictionary

 

performance-enhancing

 adjective
adjective
 
[only before noun]
 
jump to other results
(of a substance, especially a drug) that people take so that they will be more successful in a sports competition steroids and other performance-enhancing drugs The athletes were tested for performance-enhancing drugs.
See the Oxford Advanced Learner's Dictionary entry: performance-enhancing