noun (often initial capital letter) U.S. Aerospace.
the portion of the Apollo spacecraft in which two astronauts landed on the moon's surface and then returned to the orbiting command module. Abbreviation: LM
Origin of lunar module
First recorded in 1965–70
Also called lunar excursion module.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
British Dictionary definitions for lunar module
the module used to carry two of the three astronauts on an Apollo spacecraft to the surface of the moon and back to the spacecraft
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