- One who professed, or makes open declaration of, his
sentiments or opinions; especially, one who makes a public avowal of
his belief in the Scriptures and his faith in Christ, and thus unites
himself to the visible church. - One who professed, or publicly teaches, any science or
branch of learning; especially, an officer in a university, college, or
other seminary, whose business it is to read lectures, or instruct
students, in a particular branch of learning; as a professor of
theology, of botany, of mathematics, or of political economy.