What does LEM stand for?

Antenna Effective Length for Magnetic-Field Antennas (IEEE)

Laboratory Environment Model (MCD)

Laboratory of Electro-Modeling - Former USSR

Lake Exploration Module - University of Wisconsin

Landform Elevation Model (GIS)

Language Extension Module (SAUO)

LASER Energy Monitor

LASER Exhaust Measurement

Lateral Eye Movement

Launch Enclosure Maintenance - Aerospace (IAA)

Launcher Electronic Module - Military

Launch Escape Monitor (MCD)

Launch Escape Motor - NASA

Law Enforcement Manual - IRS

Leading Electrical Mechanician

Legacy Encapsulation Methodology

Lehman Corp. (SAUO)

Leibovitz-Emory Medium - Microbiology

Lema Boat Corp., Bristol, RI - Manufacturer code for watercraft hull identification number (USCG)

Le Majestic - NCIC firearms make code (NCIC)

LeMans - NCIC car model code

Lembang - Java - Seismograph station code, US Geological Survey (SEIS)

Lemmon, SD - Location identifier - FAA (FAAL)

Lemoyne - NCIC car model code

Length of Effectiveness for Magnetic-Field Antennae

Leukocytic Endogenous Mediator - Immunochemistry

Leukoencephalomalacia - Veterinary medicine

Library Education and Manpower (SAUO)

Light Effector Mediator System - Plant physiology

Light Electron/Emission Microscope/py - Medicine (EDAA)

Light Emission Microscopy (MELL)

Light Equipment Maintenance (MCD)

Linear Electric Motor - Magnetic rapid-transit car

Liquid Emulsion Membrane - Separation technology

Logical End of Media

Logic Enhanced Memory

Logistic Element Manager

Logistics Element Manager (SAUO)

Lower Explosive Mixture (SAUS)

Luminescences Emission Monitor

Lunar Escape Module (GIS)

Lunar Excursion Module - Later, LM - NASA

Lunar Exploration Module - NASA (IAA)

Nomaande - Language code (ETLW)

Lemon - Philately

Lemaire - Botanist in plant scientific name (HUH)