Valedictory n. (pl. valedictories) A valedictory oration or address spoken at commencement in American colleges or seminaries by one of the graduating class, usually by the leading scholar.
... or less was nothing to Poppy. And that one, she felt, had been valedictory. She had kissed, not Ricky-ticky, but his dying Innocence, the boy in him. And she had really wanted him ... — The Divine Fire • May Sinclair