What is an official seat, as of a chief magistrate or a judge, but esp. that of a professor; hence, the office itself. The chair of a philosophical school. Whewell. A chair of philology. M. Arnold called?

chair — An official seat, as of a chief magistrate or a judge, but esp. that of a professor; hence, the office itself. The chair of a philosophical school. Whewell. A chair of philology. M. Arnold. (Webster's 1913.)