Valedictory

Val`e*dic"to*ry (?), a. Bidding farewell; suitable or designed for an occasion of leave-taking; as, a valedictory oration.

Val`e*dic"to*ry, 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.