from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Roman Catholic Church The authority to teach religious doctrine.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. the teaching office or authority of the Roman Catholic Church.
from The Century Dictionary and Cyclopedia
- n. In alchemy, a magistral; the philosopher's stone.
- n. An authoritative statement or doctrine; a magistery.
Latin, the office of a teacher or other person in authority, from magister, master; see magisterial.(American Heritage® Dictionary of the English Language, Fourth Edition)
From Latin magisterium ("office of a president, chief; magisterium"), from magister ("master"). (Wiktionary)