participant
US /pɑːrˈtɪs.ə.pənt/
UK /pɑːrˈtɪs.ə.pənt/

1.
participant, acteur
a person who takes part in something
:
•
Each participant received a certificate.
Chaque participant a reçu un certificat.
•
The survey included over 100 participants.
L'enquête comprenait plus de 100 participants.