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Webster 1913 Edition

Adj.

[L.

lucubratorius

Composed by candlelight, or by night; of or pertaining to night studies; laborious or painstaking.

Pope.

Adj.

Composed by candle-light or by night.

lucubratory ‎(not comparable)

Composed by candlelight, or at night.
(Can we find and add a quotation of Alexander Pope to this entry?)