- the faint illumination of the part of the moon not illuminated by sunlight, as during a crescent phase, caused by the reflection of light from the earth.
Origin of earthshine
Also called earthlight.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for earthshine
The ancients were greatly exercised in their minds to account for this "earthlight," or "earthshine," as it is also called.Astronomy of To-day
Cecil G. Dolmage
- the ashen light reflected from the earth, which illuminates the new moon when it is not receiving light directly from the sun
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012