Synonyms of 'lucubration'
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A dissertation is a long formal piece of writing on a particular subject, especially for a university degree.
He is currently writing a dissertation.
An opus is a piece of classical music by a particular composer. Opus is usually followed by a number which indicates at what point the piece was written. The abbreviation op. is also used.
Emerson, Lake and Palmer have recorded their latest opus in Dolby Surround.
Thesaurus for lucubration from the Collins English Thesaurus
laborious study, esp at night