opus

UK: /ˈəʊpəs/ US: /ˈoʊpəs/ ,(ō′pəs)

Inflections of 'opus' (n):

opuses

npl

opera

npl

WordReference Random House Learner's Dictionary of American English © 2025

o•pus /ˈoʊpəs/   n. [countable] , pl. o•pus•es or, esp. for 2, ,.  o•pe•ra 

/ˈoʊpərə, ˈɑpərə/.  
1. Music and Dance one of the musical works of a composer.
2. Literature a literary or artistic work.

See -oper-.

WordReference Random House Unabridged Dictionary of American English © 2025

o•pus  (ō′pəs), n., pl. o•pus•es or, esp. for 1, 2, o•pe•ra 

(ō′pər ə, op′ər ə). 
1. Music and Dance a musical composition.
2. Music and Dance one of the compositions of a composer, usually numbered according to the order of publication.
3. Literature a literary work or composition, as a book:
   Have you read her latest opus?
   Abbr.: op.

• Latin: work, labor, a work
• 1695–1705

Collins Concise English Dictionary © HarperCollins Publishers::

opus / ˈəʊpəs ˈɒp-/ noun (opuses, opera / ˈɒpərə/)

1. an artistic composition, esp a musical work
2. (often capital) (usually followed by a number) a musical composition by a particular composer, generally catalogued in order of publication: Beethoven's opus 61 is his violin concerto

Abbreviation: op. Etymology: 18th Century: from Latin: a work; compare Sanskrit apas work