A person who participates in a discussion, especially in an academic or formal setting.

चर्चा करने वाला व्यक्ति

English Usage: The discussant provided valuable insights during the conference.

Hindi Usage: सम्मेलन के दौरान चर्चा करने वाले व्यक्ति ने मूल्यवान जानकारी प्रस्तुत की।