- a great work, especially the chief work of a writer or artist: Proust's magnum opus is Remembrance of Things Past.
Origin of magnum opus
Borrowed into English from Latin around 1785–95
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- a great work of art or literature, esp the greatest single work of an artist
Word Origin and History for magnum opus
Online Etymology Dictionary, © 2010 Douglas Harper
The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.