last quarter

noun Astronomy.

the instant, approximately one week after a full moon, when half of the moon's disk is illuminated by the sun.

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for last quarter

Historical Examples of last quarter

A last-quarter moon was now shining low on the eastern horizon.
Creatures of the Abyss
Murray Leinster
The last-quarter moon rose at long last, and shone upon the glassy-rippled water of the lagoon.
Creatures of the Abyss
Murray Leinster

British Dictionary definitions for last quarter

last quarter

noun

one of the four principal phases of the moon, occurring between full moon and new moon, when half the lighted surface is visibleCompare first quarter

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