/ Dictionary / Index L lucubration: Meaning and Definition of Find definitions for: lu•cu•bra•tion Pronunciation: (l"kyoo-brā'shun), [key] — n. laborious work, study, thought, etc., esp. at night. the result of such activity, as a learned speech or dissertation. Often,any literary effort, esp. of a pretentious or solemn nature. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: lucubration (Thesaurus) lucubrate luculent Related Content Daily Word Quiz: intrepid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language