earthshine

[ urth-shahyn ]
/ ˈɜrθˌʃaɪn /

noun Astronomy.

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.

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What does “vacillate” mean?
Also called earthlight.

Origin of earthshine

First recorded in 1825–35; earth + shine1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences 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

British Dictionary definitions for earthshine

earthshine

earthlight

/ (ˈɜːθˌʃaɪn) /

noun

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