[ per-i-loon ]
/ ˈpɛr ɪˌlun /


the point in a lunar orbit that is nearest to the moon.
Compare apolune.

Origin of perilune

1955–60; peri- + -lune < Latin lūna moon, on the model of perigee Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for perilune


/ (ˈpɛrɪˌluːn) /


the point in a lunar orbit when a spacecraft launched from the moon is nearest the moonCompare apolune, pericynthion

Word Origin for perilune

C20: from peri- + -lune, from Latin lūna moon
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

Science definitions for perilune


[ pĕrĭ-lōōn′ ]

The point at which an object orbiting the Moon, such as an artificial satellite, is closest to the Moon's center.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.