• Webster's Revised Unabridged Dictionary
    • n Earthlight (Astron) The sunlight reflected from the earth to the moon, by which we see faintly, when the moon is near the sun (either before or after new moon), that part of the moon's disk unillumined by direct sunlight, or “the old moon in the arms of the new.”
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Century Dictionary and Cyclopedia
    • n earthlight Light reflected by the earth: same as earth-shine.
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In literature:

Even at lunar sunset the Earthlight was sixteen times brighter.
"Operation: Outer Space" by William Fitzgerald Jenkins
The mellow Earthlight glowed serene and pale to illumine the Lunar night.
"Brigands of the Moon" by Ray Cummings
Something was coming from the enemy ship, red with the sunlight and earthlight, silvered by the Moon and the stars.
"Wandl the Invader" by Raymond King Cummings
The ancients were greatly exercised in their minds to account for this "earthlight," or "earthshine," as it is also called.
"Astronomy of To-day" by Cecil G. Dolmage
By comparison, this greater portion was dark, though illuminated by earthlight far brighter than any moonlight on Earth.
"The Finding of Haldgren" by Charles Willard Diffin
And now I saw Wilks plainly, standing in the Earthlight, gazing down.
"Astounding Stories of Super-Science, May, 1930" by Various
The valley floor was patched with Earthlight and shadow.
"Astounding Stories of Super-Science, June, 1930" by Various
Each rugged mountain was softened in the Earthlight's mellow glow; they melted together, and lost all sharpness of form.
"Astounding Stories, May, 1931" by Various
By Earthlight, they could distinguish its lines, though not the color.
"Master of the Moondog" by Stanley Mullen
It was night out there, with an odd metallic reflection of Earthlight against the naked crags.
"The Victor" by Bryce Walton