1. a person who takes part in or becomes involved in a particular activity or event

Examples

• Each participant in the study received a small payment.
• The workshop had over fifty participants from different companies.
• All participants must sign a waiver before the race begins.
• She was an active participant in the school debate team.
• The survey asked participants about their shopping habits.
• New participants are welcome to join the book club at any time.
• The conference participants came from around the world.