A person who discusses.

plural of discusser

plural of discussive

(medicine, dated) A medicine that discusses or disperses morbid humours; a discutient.

(medicine, dated) Able or tending to discuss, or disperse, tumors or coagulated matter. / (dated) Doubt-dispelling; decisive.

plural of panel discussion

A conversation about a specific topic conducted by a group of experts, usually either in the presence of an audience or in a broadcast (or both).

(Internet) A forum or message board.

(UK, euphemistic, humorous) Sexual intercourse.

plural of discussion room