lucubration

英 [,luːkjʊ'breɪʃ(ə)n; ,ljuː-] 美

lucubration (n.): 1590s, "literary work showing signs of too-careful elaboration," from Latin lucubrationem (nominative lucubratio) "nocturnal study, night work," noun of action from past participle stem of lucubrare, literally "to work by artificial light," from stem of lucere "to shine" (see light (n.)).