Definitions for "LEM"
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.
a spacecraft that carries astronauts from the command module to the surface of the moon and back
LAN Expansion Module. A card that provides additional network interfaces to the PacketShaper, offering additional deployment options for complex topologies with multiple LANs.
Link error monitor (or monitoring). Part of the physical sublayer of FDDI concentrator ports that examines the link error rate of an active link.
Keywords:  efficient, location, mortgage
Location Efficient Mortgage