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Definition of Participant

Participant: 1. In a clinical trial, someone who takes part in it. A participant may or may not have a disease. The term participant in this regard is synonymous with the term subject.
2. In health care benefits, a person who is eligible to receive health benefits under a health benefits plan. The term participant in this regard may refer to the employee, spouse or other dependents.

Source: MedTerms™ Medical Dictionary
http://www.medterms.com/script/main/art.asp?articlekey=39537
Last Editorial Review: 6/14/2012

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