'magnum opus' definitions:

Definition of 'magnum opus'

From: WordNet
noun
A great work of art or literature

Definition of 'magnum opus'

From: GCIDE
  • magnum opus \mag"num o"pus\ (m[a^]g"n[u^]m [=o]"p[u^]s), n.
  • 1. A great work of art or literature. [WordNet 1.5]
  • 2. The greatest work or achievement of a particular artist, writer, or other individual. [PJC]
  • Inspired by this milieu, [Max Stirner] wrote his magnum opus The Ego and Its Own, which was published in November 1844. --Svein Nyberg (The Small Max Stirner Web Page, 1988 [http://www.math.uio.no/~solan/stirner/stirner.html]) [PJC]