Labioincisal - Medicine (EDAA)
Labrador Airways Ltd. - Canada - ICAO designator (FAAC)
Lakeland - Florida - Airport symbol (AD)
Lakeland, FL - Location identifier - FAA (FAAL)
Lalia - Language code (ETLW)
Lana Gold Corp. - Vancouver Stock Exchange symbol
Landcare Australia Limited (SAUO)
L & L Marine, Anaheim, CA - Manufacturer code for watercraft hull identification number (USCG)
Langley Aeronautical Laboratory - NASA
Laugh a Little - Chat lingo (CHAT)
Launch and Leave - Military (MUSM)
Leased Access Line (TLAA)
Left Axillary Line - Medicine (DMAA)
Light-Adjusting Lens - Medicine (EDAA)
Lightning Activity Level - Weather Information Management System, US Fire Service
Limulus Amebocyte Lysate - Medicine
Livonia, Avon & Lakeville Railroad Corp. - AAR code
Local Adjunct Language (PDAA)
Local Analog Loopback (XSAL)
Los Almos Laboratory (SAUO)
Loudspeaker Acoustical Labyrinth
Low Air Loss
Low Alpha Lead (XSAL)
Lower Acceptance Level
Lysinoalanine - An amino acid
Lysosomal Acid Lipase - Medicine (EDAA)