The Collaborative International Dictionary
Antelucan
Antelucan \An`te*lu"can\, a. [L. antelucanus; ante + lux light.]
Held or being before light; -- a word applied to assemblies
of Christians, in ancient times of persecution, held before
light in the morning. ``Antelucan worship.''
--De Quincey.
Wiktionary
antelucan
a. Before dawn
Usage examples of "antelucan".
How serene does she now arise, a queen among the Pleiades, in the penultimate antelucan hour, shod in sandals of bright gold, coifed with a veil of what do you call it gossamer.