Definition from Wiktionary, the free dictionary
Formed 1759, from valediction.
valedictorian (plural valedictorians)
- (US, Canada, properly) The individual in a graduating class who delivers the farewell or valedictory address, usually the person who graduates with the highest grades.
- (US, Canada, colloquial) The individual in a graduating class who graduates with the highest grades.
farewell speech giver