Having or showing great authority. The professor's magisterial tone commanded the attention of the entire lecture hall.
Relating to or characteristic of a magistrate or magistrates. He lodged an appeal against the magisterial decision of the local court.
Domineering or dictatorial. Her magisterial manner made it difficult for others to express their opinions.
Prepared extemporaneously by a pharmacist on the basis of a physician's prescription; not commercially manufactured. The patient was given a magisterial preparation of the antibiotic ointment.