"light-bringing, emitting light," 1650s, from Latin lucifer "light-bringing" (see Lucifer) + -ous. Figurative use "affording means of discovery" is earliest (1640s) and more common. Related: Luciferously.
lucid
lucida
lucidity
Lucifer
luciferase
luciferous
lucifugous
Lucille
Lucina
Lucite
Lucius
)window.location='https://www.paypal.com/cgi-bin/webscr?cmd=_donations&business=byronic106@yahoo.com&lc=US&item_name=Donation+to +Help+Keep+Etymonline+Free+and+Open&no_note=0&cn=&curency_code=USD&bn=PP-DonationsBF:btn_donateCC_LG.gif:NonHosted'){kind=link}