If you're a member of a group that's officially (sometimes publicly) discussing a specific subject, you're a panelist.

Most panelists are either experts in the subject being discussed, or people whose lives are affected by related issues, developments, or changes. A group of panelists is called a panel, which comes from the Old French, in which it means "piece of cloth," and an Anglo-French legal meaning, "piece of parchment listing jurors." Panelist is an American English invention from about 1950.

Definitions of panelist

n a member of a panel

juror, juryman, jurywoman
someone who serves (or waits to be called to serve) on a jury
the presiding member of the jury and the one who speaks on their behalf
petit juror, petty juror
a member of a petit jury
Type of:
anyone who expresses a reasoned judgment of something

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