ˈinztəˌtȯ(ə)r, ˈin(t)stə- noun
( -s )
Etymology: Latin, from instit- (perfect stem of insistere to occupy a place in, stand upon, persist) + -or — more at insist
: a person (as the manager of a commercial or manufacturing business, a broker, factor, or commission agent) to whom the transaction of some business is committed as agent to such a degree as to bind the principal — used chiefly in Roman and civil law
• in·sti·to·ri·al | ̷ ̷ ̷ ̷|tōrēəl adjective