| CODE | ABBREVIATION |
| L2F | Layer Two Forwarding |
| L2TP | Layer Two Tunneling Protocol |
| L8R | Later (as in Good-bye) |
| L8RG8R | Later 'Gater |
| LA | Library Association |
| LAA | Locally Administered Address |
| LAB&TYD | Life's A Bitch & Then You Die. |
| LAC | Loop Assignment Center |
| LAD | Local Area Disk |
| LADS | Local Area Data Service |
| LADT | Local Access Data Transport / Local Area Data Transport |
| LAGNAF | Let's all get naked and f#$%! |
| LAGNAFA | Lets All Get Naked and Fool Around |
| LAIS | Local Automatic Intercept System |
| LAL | Leased Access Line |
| LAM | Lobe Attachment Module |
| LAMA | Local Automatic Message Accounting |
| LAN | Local Area Network |
| LAN/RM | Local Area Networks Reference Model |
| LANAO | Local Area Network Automation Option |
| LANE | Local Area Network Emulation |
| LANIC | Local Area Network Interface Card |
| LANL | Los Alamos Nuclear Laboratories |
| LAP | Link Access Procedure / Link Access Protocol |
| LAPB | Link Access Procedure - Balanced |
| LAP-B | Link Access Procedure - Balanced |
| LAPB | Link Access Procedure Balanced |
| LAPD | Link Access Procedure on the D channel |
| LAPM | Link Access Procedure for Modems |
| LAP-M | Link Access Procedure for Modems |
| LAPX | Link Access Procedure half dupleX |
| LART | Luser Attitude Readjustment Tool |
| LASER | Light Amplification by Stimulated Emission of Radiation |
| LASS | Local Area Signaling Service / Local Area Switching Service |
| LAST | Local Area System Transport |
| LAT | Laser Ablation Transfer / Local Area Transport |
| LATA | Local Access Transport Area / Local Access and Transport Area |
| LATI | Loop Activity Tracking Information |
| LATIS | Loop Activity Tracking Information System |
| LAV | Load AVerage |
| LAVC | Local Area Vax Cluster |
| LAW | Lyrical Association of Writers |
| LAWN | Local Area Wireless Network |
| LB | Leaky Bucket / Local Bus / Pound (usually as lb) |
| LBA | Logical Block Address(ing) |
| LBL | Lawrence Berkeley Laboratory |
| LBO | Line BuildOut |
| LBRV | Low Bit Rate Voice |
| LBS | LAN Bridge Server / Load Balance System |
| LBT | Listen Before Talk(ing) |
| LC | Line Conditioner / Link Control / Local Channel |
| LCAMOS | Loop CAble Maintenance Operation System |
| LCC | Leadless Chip Carrier / Lost Calls Cleared |
| LCCIS | Local Common Channel Interoffice Signaling/Signing |
| LCCL | Line Card Cable |
| LCCLN | Line Card Cable Narrative |
| LCD | Liquid Crystal Display / Loss of Cell Delineation / Lost Calls Delayed / Line Current Disconnect |
| LCDN | Last Called Directory Number |
| LCF | Log Control Function |
| LCGN | Logical Channel Group Number |
| LCI | Logical Channel Identifier / Logical Channel Identific |
| LCIE | Lightguide Cable Interconnection Equipment |
| LCLOC | Line Card LOCation |
| LCM | Line Concentrating Module |
| LCN | Logical Channel Number(s) |
| LCP | Link Control Protocol |
| LCR | Least Cost Routing / Line Control Register |
| LCRMKR | Line Card Remarks Retained |
| LCSE | Line Card Service and Equipment |
| LCSEN | Line Card Service and Equipment Narrative |
| LCT | Large Capacity Tray |
| LCT-RTS | Languages Compilers and Tools for Real-Time Systems |
| LD | LAN Destination / Laser Diode / Long Distance |
| LDAP | Lightweight Directory Access Protocol |
| LDCELP | Low Delay Code Exciting Linear Prediction |
| LD-CELP | Low-Delay Code Excited Linear Prediction |
| LDDI | Local Distributed Data Interface |
| LDDS | Local Distributed Data Service |
| LDEV | Logical Device (number) |
| LDM | Limited Distance Modem |
| LDMTS | Long Distance Message Telecommunications Service |
| LDN | Listed Directory Number |
| LDP | Laboratory Data Products |
| LDS | Local Digital Switch |
| LDTR | Local Descriptor Table Register |
| LE | LAN Emulation |
| LEA | Law Enforcement Agency |
| LEAS | LATA Equal Access System |
| LEBC | Low End Business Center |
| LEC | LAN Emulation Client / Local Exchange Carrier |
| LECID | LAN Emulation Client Identifier |
| LECS | LAN Emulation Configuration Server |
| LED | Light Emitting Diode / Lightly Educated Dudes |
| LEDS | Low End Disk Systems |
| LEEP | Large Expanse Extra Perspective |
| LEETAC | Law Enforcement Electronic Technology Assistance Commi |
| LEGSS | Low End Graphics Sub-System |
| LEN | Large Extension Node / Line Equipment Number / Low End Networks |
| LENCL | Line Equipment Number CLass |
| LENNI | LAN Emulation Network-to-Network Interface |
| LEOS | Low Earth Orbit Satellite |
| LES | LAN Emulation Server |
| LES/BUS | LAN Emulation Server / Broadcast and Unknown Server |
| LEST | Low End Systems and Technologies |
| LF | Line Feed (ASCII) / Line Finder / Low Frequency / Largest Frame |
| LFACS | Loop Facilities Assignment and Control System |
| LFC | Local Function Capabilities |
| LFM | Link Framing Module |
| LFN | Long Fat Network / Long File Name |
| LGC | Line Group Controller |
| LGN | Logical Group Node / Logical Group Number |
| LHB | Line History Block |
| LHM | Lord Help Me |
| LHO | Laughing Head Off |
| LHT | Long Holding Time |
| LHU | Lord Help Us |
| LI | Length Indicator / List Item |
| LIB | Library |
| LibOp | Libraries Operator |
| LICS | Logic In Computer Science / Lotus International Character Set |
| LID | Local Injection / Detection |
| LIDB | Line Information DataBase |
| LIF | Low Insertion Force |
| LIFO | Last In First Out |
| LIJP | Leaf Initiated Join Parameter |
| LIK | Legends In Kaos |
| LILO | LInox LOader |
| LIM | Line Interface Module / Lotus-Intel-Microsoft |
| LIMDOW | Light Intensity Modulation Direct OverWrite (technology) |
| LIMS | Lotus Intel Microsoft Specification |
| LIP | Large Internet Packet |
| LIPS | Lightweight Internet Person Schema |
| LIPX | Large Internetwork Packet Exchange |
| LIS | Legacy Information Systems / Lithium Ion Storage |
| LISP | LISt Processing (programming language) / Lots of Infuriating & Silly Parenthesis |
| LIT | Line Insulation Test |
| LIU | Line Interface Unit |
| LIV | Link Integrity Verification |
| LIW | Long Instruction Word |
| LJ | (HP) LaserJet |
| LKG | Last Known Good |
| LL | Lower Layers |
| LLAP | LocalTalk Link Access Protocol |
| LLATMI | Lower Layer Asynchronous Transfer Mode Interface |
| LLC | Limited Liability Company / Local Link Control / Logical Link Control )Sublayer / Type 1 or Type 2) |
| LLC/SNAP | Logical Link Control SubNetwork Access Protocol |
| LLCS | Logical Link Control Security |
| LLF | Low Level Format(ing) |
| LLI | Lunatic Labs Incorporated |
| LLN | Line Link Network |
| LLP | Lower Layer Protocol |
| LLPDU | Logical Link Protocol Data Unit |
| LLS | LAN - Like Switching |
| LLSIG | Lower Layer Special Interest Group |
| LLTA | Lots and Lots of Thunderous Applause |
| LLWANP | LAN - to - LAN Wide Area Network Program |
| LM | Layer Management |
| LMAO | Laughing My As* Off |
| LMB | Lower Memory Block / Left Mouse Button |
| LMDS | Local Multipoint Distribution Service |
| LME | Layer Management Entity / License Management Facility / Low Magnetic Field |
| LMFAO | Laughing My Fu**ing As* Off |
| LMI | Layer Management Interface / Local Memory Interconnect |
| LMKOAP | Let Me Know Of Any Problems |
| LMMP | LAN / MAN Management Protocol |
| LMMS | LAN / MAN Management Service / Local Message Metering System |
| LMOS | Loop Maintenance Operating System |
| LMSO | Laughing My Socks Off |
| LMTTA | Leave Me the F* Alone |
| LMU | LAN Manager for UNIX |
| LMWIS | Lick Me Where I Sweat |
| LMX | L MultipleX |
| LN | Load Number |
| LNA | Low Noise Amplifier |
| LNB | Low Noise Block Deconverter |
| LND | Local Number Dialing |
| LNM | LAN Network Manager |
| LNNI | LAN Emulation Network-to-Network Interface |
| LO | Line Occupancy |
| l-o | Yawning |
| LOBJECT | Line Of Business obJECT |
| LOC | Library Of Congress / Local Operating Company / Loss Of Cell (delineation) |
| LOCAP | LOw CAPacitance |
| LOD | Legion of Doom / Level Of Detail |
| LOD/H | Legion of Doom/Hackers |
| LODH | Legion Of Doom Hackers |
| LOF | Lock Off-line / Loss Of Frame |
| LOL | Laugh(s) Out Loud / Laughing out loud / Laughed Out Loud / Legion Of Lucifer / Lots Of Luck |
| LOLFOMC | laughing out loud |
| LON | Lock On-line |
| LOP | Loss Of Pointer |
| LORAN | Long Range Navigation |
| LORTAD | Law on Protection of Personal Data |
| LOS | Line Of Site |
| LOTSAB | Legion Opposed to Stupid Asshole Botanists |
| LPC | Linear Predictive Coding / Local Procedure Call |
| LPCDF | Low Profile Combined Distributing Frame |
| LPD | Line Printer Daemon (sometimes as lpd) |
| LPF | League for Programming Freedom |
| LPI | Lines Per Inch (usually as lpi) |
| LPM | Lines Per Minute |
| LPN | Local Packet Network |
| LPP | Lightweight Presentation Protocol |
| LPT | Local Printer Terminal |
| LPVS | Link Packetized Voice Server |
| LQA | Line Quality Analysis |
| LRAP | Long Route Analysis Program |
| LRC | Longitudinal Redundancy Check |
| LRM | LAN Reporting Mechanism / Least Recently used Master |
| LRP | Long Range Plan |
| LRS | Line Repeater Station |
| LRSS | Long Range Switching Studies |
| LRU | Least Recently Used (algorithm) |
| LS | Line Stabilizer |
| LS/LC | Line Stabilizer / Line Conditioner |
| LSA | Limited Space-charge Accumulation |
| LSAP | Link Service Access Point |
| LSAPI | Licensing Server Application Program Interface |
| LS-API | Licensing Server Application Program Interface |
| LSB | Least Significant Bit / Lower Side Band |
| LSD | Least Significant Digit |
| LSDU | Link Service Data Unit |
| LSE | Language Sensitive Editor / Local Single-layer Embedded / Local System Environment |
| LSEL | Link SELector |
| LSHMBB | Laughing So Hard My Belly is Bouncing |
| LSHMBH | Laughing So Hard My Belly Hurts |
| LSHTTARDML | Laughing So The Tears Are Running Down My Leg |
| LSI | Large Scale Integrated (circuitry) / Large Scale Integration |
| LSL | Link Support Layer |
| LSLC | Line Stabilizer / Line Conditioner |
| LSM | Logical Storage Manager / Lotus Smart Movie (file format) |
| LSN | Logical Session Number |
| LSP | Link State Packet |
| LSR | Leaf Setup Request |
| LSRP | Local Switching Replacement Planning (system) |
| LSRR | Loose Source and Record Route |
| LSS | Loop Switching System |
| LSSU | Link Status Signal Unit |
| LSV | Line Status Verifier |
| LT | Line Termination |
| LTA | Line TurnAround |
| LTAB | Line Test Access Bus |
| LTB | Last Trunk Busy |
| LTC | Local Test Cabinet |
| LTD | Limited / Local Test Desk |
| LTDI | Learning and Technology Dissemination Initiative |
| LTE | Line Terminating Entity |
| LTF | Lightwave Terminating Frame / Line Trunk Frame |
| LTG | Line Trunk Group |
| LTIP | Laughing Till I Puke |
| LTM | LAN Traffic Monitor |
| LTNS | Long Time No See |
| LTP | Link Test Pulse |
| LTRS | Letter Shift |
| LTS | Laughing To Self / Loss Test Set |
| LU | Local Use / Logical Unit |
| LUA | Logical Unit Application |
| LUG | Local User Group |
| LUN | Logical Unit Number |
| LUNI | LAN emulation User-to-Network Interface |
| LUT | Look-Up Table |
| LUV | Lisp Users and Vendors (conference) |
| LUW | Logical Units of Work |
| LUWAMH | Love You With All My Heart |
| LVM | Line Verification Module / Logical Volume Manager |
| LWSP | Logical White SPace |
| LWT | Listen While Talk |
| LXE | Lightguide eXpress Entry |
| LY | Love Ya |
| LYTB | Love you too babe |
| LZW | Lempel-Ziv-Welch (compression algorithm) |
L
LAC :- Line of Actual Control
LAHDC :- Ladakh Hill Development Council
LASER :- Light Amplification by Stimulated Emission of Radiation
LCM :- Lowest Common Multiple
LDC :- Lower Division Clerk
LIBOR :- London Inter Bank Offered Rate
LIC :- Life Insurance Corporation of India
LLB :- Bachelor of Law
LLD :- Doctor of Law
LLM :- Master of Law
LMG :- Light Machine Gun
LOC :- Line of Control
LOAC :- Line of Actual Control
LPA :- Laws Prevention Association of India
LPG :- Liquefied Petroleum Gas
LSD :- Lysergic acid Di-ethylamide
LTTE :- Liberation Tigers of Tamil Elam
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