'lunar excursion module' definitions:

Definition of 'lunar excursion module'

(from WordNet)
noun
A spacecraft that carries astronauts from the command module to the surface of the moon and back [syn: lunar excursion module, lunar module, LEM]

Definition of 'lunar excursion module'

From: GCIDE
  • LEM \LEM\, LEM \L.E.M.\n. [acronym from Lunar Excursion Module.] (Astronautics) A lunar excursion module, a spacecraft designed to transport people from a command module in orbit around the moon to the surface of the moon and back again.
  • Syn: lunar excursion module, lunar module. [WordNet 1.5]