Lightning Imaging Sensor 
Local Interconnection Service 
Logistics Information System 
Land Information System 
Library and Information Science 
Local Interconnection Services 
Laboratory Information Systems 
Language Independent Specification 
Local Interconnect Service 
Localizer Inertial Smoothing 
Location Information Server 
Long Island Sound 
Low Income Subsidy 
Low-Income Subsidy 
Label Interface Structure 
Land Information Systems 
lanthanide-induced shift 
Laughing In Silence 
Library and Information Service 
library and information services 
Library and Information Studies 
Lightening Imaging Sensor 
Link Interface Shelf 
lithium 3,5-diiodosalicylate 
Load Isolation System 
Load Isolations System 
Local Interconnect Services 
Local Interstellar Space 
Logical IP Subnet 
Logical IP Subnetwork