Lucubration /(?)/
Lu·cu·bra·tion
Lucubration
n.
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The act of lucubrating, or studying by candlelight; nocturnal study; meditation.
After long lucubration I have hit upon such an expedient.
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That which is composed by night; that which is produced by meditation in retirement; hence (loosely) any literary composition.
Thy lucubrations have been perused by several of our friends.