- the moon when the whole of its disk is illuminated, occurring when in opposition to the sun.
- the phase of the moon at this time.
Origin of full moon
before 1000; Middle English ful moyne, Old English fulles monan
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for full moon
One full-moon night, a friend and I dragged our hotel bedding to the great stone heads, the moai, some 24 feet tall.Allan Gurganus: How I Write
October 16, 2013
They continue this till the full-moon day called Seegahunname.
They fast on new-moon nights, and on the eleventh night after full-moon or new-moon.
Women who have husbands fast on full-moon days, Mondays, and Fridays.
When they can make the attack, they do it by night, and at the full-moon.The Natural History of the Varieties of Man
Robert Gordon Latham
It was full-moon night, however; the island was as white as day.Angel Island
Inez Haynes Gillmore
- one of the four phases of the moon, occurring when the earth lies between the sun and the moon so that the moon is visible as a fully illuminated disc
- the moon in this phase
- the time at which this occurs
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.