- 1(abbreviation op.) a piece of music written by a famous composer and usually followed by a number that shows when it was written Beethoven's Opus 18
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- 2(formal) an important piece of literature, etc., especially one that is on a large scale synonym work see magnum opus
opus
nounNAmE//ˈoʊpəs//
(pl. opuses or opera NAmE//ˈoʊpərə//, NAmE//ˈɑpərə//
) [usually singular]Check pronunciation: opus