a. Of, relating to, or characteristic of a master or teacher; authoritative: a magisterial account of the history of the English language.
b. Sedately dignified in appearance or manner: "She would appear on the porch and reign over the street in magisterial beauty" (Harper Lee).
2. Dogmatic; overbearing: expounded on official protocol in magisterial tones.
3. Of or relating to a magistrate or a magistrate's official functions.
[Late Latin magisteriālis, from magisterius, from Latin magister, master, teacher; see meg- in the Appendix of Indo-European roots.]
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2018 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.