opus

/ˈoʊpəs/
noun
  1. A major creative work, especially a musical composition, often numbered by the composer.
    • The composer published his first opus at the age of 16.
    • The museum displayed the artist's final opus, a massive painting that took ten years to complete.
    • Beethoven's Symphony No. 5 is one of his most famous opuses.
  2. Any important artistic or literary work, such as a book, film, or painting.
    • Her latest opus is a collection of poems about nature and memory.
    • The novel is considered the author's greatest opus.
    • The director spent five years creating his cinematic opus.
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