# List of acronyms: L

This list contains acronyms, initialisms, and pseudo-blends that begin with the letter L.
For the purposes of this list:
* acronym = an abbreviation pronounced as if it were a word, e.g., SARS = severe acute respiratory syndrome, pronounced to rhyme with cars
* initialism = an abbreviation pronounced wholly or partly using the names of its constituent letters, e.g., CD = compact disc, pronounced cee dee
* pseudo-blend = an abbreviation whose extra or omitted letters mean that it cannot stand as a true acronym, initialism, or portmanteau (a word formed by combining two or more words).
    (a) = acronym, e.g.: SARS – (a) severe acute respiratory syndrome
    (i) = initialism, e.g.: CD – (i) compact disc
    (p) = pseudo-blend, e.g.: UNIFEM – (p) United Nations Development Fund for Women
    (s) = symbol (none of the above, representing and pronounced as something else; for example: MHz – megahertz)
Some terms are spoken as either acronym or initialism, e.g., VoIP, pronounced both as voyp and V-O-I-P.
(Main list of acronyms)

## Contents

* Top
* L0–9 LA LB LC LD LE LF LG LH LI LJ LK LL LM LN LO LP LQ LR LS LT LU LV LW LX LY LZ
* L – (s) Fifty (in Roman numerals) – (i) Label – Lap – Large – Laser (US military aircraft basic mission designation) – Latin – Left – (s) Litre – (i) Low (transmissions)

## LA

* l8r, g8r – (a) later, gator
* la – (s) Latin language (ISO 639-1 code)
* La – (s) Lanthanum
* LA
** (s) Laos (FIPS 10-4 country code; ISO 3166 digram)
** Louisiana (postal symbol)
** (i) Los Angeles
* LAAS
** (i) Local Area Augmentation System
** Los Angeles Astronomical Society
* LAB – (a) Logistics Assault Base
* LabVIEW – (p) Laboratory Virtual Instrumentation Engineering Workbench
* LACMA – (a/i) Los Angeles County Museum of Art
* LAD – (a) Laser Aiming Device
* LADW – (i) Local Air Defence Warning
* LAESI – (i) Local Authority & Emergency Service Information
* LAK – (s) Laotian kip (ISO 4217 currency code)
* LAMP – (multiple meanings)
* LAN – (a) Local Area Network
* LANL – (i) Los Alamos National Laboratory
* lao – (s) Lao language (ISO 639-2 code)
* LAO – (s) Laos (ISO 3166 trigram)
* LAPD – (i) Los Angeles Police Department
* LAR
** Light Armoured Reconnaissance
** Logistics Assistance Representative
* LARC – (a) Livermore Advanced Research Computer (cf. LLNL)
* LARP – (a) Live-Action Role-Playing
* LAS – (s) McCarran International Airport (Las Vegas, Nevada)
* Laser – (a) Light Amplification by Stimulated Emission of Radiation (cf. Maser)
* lat – (s) Latin language (ISO 639-2 code)
* LAT
** (i/a) Lowest Astronomical Tide (nautical charts)
** Licensed Athletic Trainer (used in many of the United States; see www.oata.org)
* LATA – (i) Local Access Transport Area
* LATCH – (p) Lower Anchors and Tethers for Children (U.S. standard for attachment points for child safety seats in passenger cars)
* lav – (s) Latvian language (ISO 639-2 code)
* LAV
** (a) Land Assault Vehicle
** Light Armoured Vehicle
** Lymphadenopathy-Associated Virus
* LAW] – (a) Light Antitank Weapon
* LAX
** (s) Los Angeles International Airport
** (i) The Latin American Xchange (professional wrestling)

## LB

* lb
** (s) pound (Latin librum)
** Luxembourgish language (ISO 639-1 code)
* LB – (s) Lebanon (ISO 3166 digram)
* LBH
** (i) Light Battlefield Helicopter
** Lyman-Birge-Hopfield bands
* LBJ
** (i) Lady Bird Johnson
** LeBron James
** Light Bulb Joke
** Little Beagle Johnson (the dog owned by Lyndon and Lady Bird Johnson)
** Lyndon Baines Johnson
* LBN – (s) Lebanon (ISO 3166 trigram)
* LBNL – (i) Lawrence Berkeley National Laboratory
* LBP – (s) Lebanese pound (ISO 4217 currency code)
* LBR – (s) Liberia (ISO 3166 trigram)
* LBS – (i) Location-based service
* lbs – (s) pounds (plural form of lb, see above)
* LBT – (i) Large Binocular Telescope
* LBW – (i) Leg Before Wicket
* LBY – (s) Libya (ISO 3166 trigram)

## LC

* LC – (i) Line of Contact – (s) Saint Lucia (ISO 3166 digram)
* LC2IEDM or LC$^2$IEDM – (i) Land C2IEDM (q.v.)
* LCA
** (s) Saint Lucia (ISO 3166 trigram)
** Larnaca International Airport
* LCC – (i) Land Component Commander
* LCCP – (i) Light Contingency Communications Package
* LCD – (i) Liquid Crystal Display
* LCE – (i) Leaving Certificate Examination – Load Carrying Equipment – London Commodity Exchange
* LCM – (i) Least/Lowest Common Multiple
* LCol – (s) Lieutenant-Colonel (Canada, UK)
* LCS - League of Legends Championship Series

## LD

* LD
** (i) Laser Designator
** Limited Deployment
** Line of Departure
* LDA – (i) Lateral Drift Apparatus (paratroops)
* LDAP – (a/i) Lightweight Directory Access Protocol (pronounced "ell-dap")
* LDC – (i) Lesser Developing/Developed Country
* LDE - (s) Tarbes–Lourdes–Pyrénées Airport (IATA code)
* LDL – (i) Low-Density Lipoprotein
* LDMOS – (i/a) Laterally diffused MOS transistor ("ell-dee-moss")
* LDS
** (i) Latter-day Saint (also "Latter Day Saint"); also used as an abbreviation by the Church of Jesus Christ of Latter-day Saints
** Liberal Democracy of Slovenia
* LDV – (i) Local Defence Volunteers (British Home Guard)
* LDW – Lane Departure Warning (ADAS)

## LE

* LE – (s) Lebanon (FIPS 10-4 country code)
* LEC – (i) Local Exchange Carrier
* LED – (i) Light-Emitting Diode
* Legs – (a) level emotion gad speed
* LEGAD – (p) Legal Advice
* LEMOSS – (p) Long-Endurance MObile Submarine Simulator
* LEN – (i) Large Extension Node
* LEO – (a) Low Earth orbit
* LEP – (a) Large Electron-Positron collider
* LER – (i) Loss-Exchange Ratio
* LEU – (i) Low-Enriched Uranium

## LF

* LF – (i) Low Frequency
* LFG - Let's F***ing Go! (Internet slang)
* LFO – (i) Low Frequency Oscillation / Oscillator
* LFTR – (i) Liquid fluoride thorium reactor

## LG

* lg – (s) Luganda (ISO 639-1 code)
* LG – (s) Latvia (FIPS 10-4 country code)
* LGB
** (i) Lesbian, Gay, Bisexual
** Laser-guided bomb, self-explanatory
* LGBT – (i) Lesbian, Gay, Bisexual, Transgender
** LGBTI - Lesbian, Gay, Bi, Transgender, Intersex
** LGBTQ - Lesbian, Gay, Bi, Transgender, Queer
** LGBTQIA - the A standing for "asexual", "aromantic", or "agender"
* LGLO – (i) Love God, Love Others
* LGLO's – (i) Latino Greek Lettered Organizations
* LGM
** (i) Little Green Men
** (s) Land-based Guided Missile, US military designation for guided missiles launched from ground silos, mostly used to talk about ICBMs like LGM-30 Minuteman
* LGS – (i) Landsat Ground Station

## LH

* LH
** (s) Lithuania (FIPS 10-4 country code)
** (i) Luteinising Hormone
** Lufthansa (IATA airline code)
* LHC – (i) Large Hadron Collider
* LHD
** (i) litterarum humaniorum doctor (Latin, "doctor of humane letters (humanities)")
** Left-Hand Drive (automobile)
** (s) Landing Helicopter Dock (US Navy hull classification symbol)
* LHS – (i) Left Hand Side

## LI

* li – (s) Limburgish language (ISO 639-1 code)
* Li – (s) Lithium
* LI – (s) Fifty-one (in Roman numerals) – (s) Liberia (FIPS 10-4 country code) – Liechtenstein (ISO 3166 digram)
* Libor – (p) London Interbank Offered Rate
* LIBS – (a) Laser Induced Breakdown Spectroscopy
* LIE – (s) Liechtenstein (ISO 3166 trigram)
* LIFO – (a) Last In, First Out
* LIGO – (a) Laser Interferometer Gravitational-Wave Observatory
* LIJ – (i) Los Ingobernables de Japón (Spanish, "The Ungovernables of Japan"), Japanese professional wrestling stable
* lim – (s) Limburgish language (ISO 639-2 code)
* lin – (s) Lingala language (ISO 639-2 code)
* LINEAR – (a) Lincoln Near-Earth Asteroid Research
* LiP, LIP – (s) Lithium ion polymer battery
* LISA – (a) Laser Interferometer Space Antenna
* lit – (s) Lithuanian language (ISO 639-2 code)
* LITAS – (a) Low Intensity Two Colour Approach System (aviation)
* LIVE – (a) Liquid Inertial Vibration Eliminator

## LJ

* LJ
** (i) La Jolla
** Larry Johnson (both the American football and basketball players of that name)
** LaserJet (HP printer brand)
** Library Journal
** Linux Journal
** LiveJournal
** Ljubljana
** Lord Justice of Appeal
** (s) Sierra National Airlines (IATA code)
* LJJ – (i) Lord Justices of Appeal

## LK

* LK – (s) Sri Lanka (ISO 3166 digram)
* LKA – (s) Sri Lanka (ISO 3166 trigram)
* LKL – (i) Lietuvos krepšinio lyga (Lithuanian, "Lithuanian Basketball League")
* LKR – (s) Sri Lanka rupee (ISO 4217 currency code)
* LKR4 – (s) Linkwitz-Riley 4th order (audio crossover type)

## LL

* l. l. – loco laudato (Latin: "in the place quoted")
* LL
** (i) Land Line (telephone)
** (i) Last Log
** (i) Late Latin
** (s) Laws, esp. both Laws
** (i) Left Limit
** (i) Lex Luthor (Superman character)
** (i) Light Line
** (i) Limited Liability
** (s) Lines** (i) Linked List
** (i) Little League
** (i) Low Latin
** (p) Liberland
* LLAD – (i) Low Level Air Defence
* LLB – (i) Legum Baccalaureus (Latin: Bachelor of Laws)
* LLC – (i) Limited Liability Company
* LLGC – (i) Llyfrgell Genedlaethol Cymru (National Library of Wales) – London Lesbian and Gay Centre
* LLLTV – (i) Low-Light Level Television
* LLNL – (i) Lawrence Livermore National Laboratory
* LLP – (i) Limited Liability Partnership
* LLTI – (i) Limiting Long-Term Illness – Long Lead Time Item
* LLTR – (i) Low-Level Transit Route

## LM

* LMAO – (i) Laughing My Ass Off (Internet shorthand)
* LMFAO – (i) Laughing My F**king Ass Off (Internet shorthand, electro-hop duo)
* LMB – (i) Lick My Balls
* LMN – (a/i) Lifetime Movie Network
* LMS – (i) London Mathematical Society – London, Midland and Scottish (Railway)
* LMS – (i) Like My Status (Internet shorthand)
* LMV - Light Motor Vehicle

## LN

* ln
** (s) Lingala language (ISO 639-1 code)
** Natural logarithm
* LNB
** (i) Liga Nacional de Básquet (Rioplatense Spanish, "National Basketball League"; top Argentine league)
** Ligue Nationale de Basketball (French, "National Basketball League"; the organization that operates France's top two leagues, and the unrelated top league of Switzerland)
** Low-Noise Block (Satellite dish)
* LNER
** (i) London and North Eastern Railway railway operator from 1923 until 1947 in the United Kingdom
** (i) London North Eastern Railway railway operator established in 2018 in the United Kingdom
* LNG – (i) Liquefied Natural Gas
* LNO – (p) Liaison Officer
* LNR – (i) Ligue Nationale de Rugby (French, "National Rugby League")

## LO

* lo – (s) Lao language (ISO 639-1 code)
* LO – (s) Slovakia (FIPS 10-4 country code)
* LOA – (i) Limit Of Advance
* LOC
** (a/i) Level of Operational Capability
** Limited Operational Capability
** Lines Of Code
** Lines Of Communication
** see entry
* LOD
** (i) Legion of Doom, referring to any of the following:
*** A group of DC Comics supervillains
*** A hacker group
*** A group of Philadelphia Flyers ice hockey players in the 1990s
*** The Road Warriors, a professional wrestling tag team that used the name "Legion of Doom" when performing in the WWF/WWE
** Limit of Detection – see Detection limit
* LoD – (i) Lines of Development (UK)
* LOFAR – (p) Low Frequency Analyzer and Recorder / Low Frequency Analysis and Recording in sonar systems
* LOGPAC – (p) Logistics Package
* LOL – (i) Laughing Out Loud (Internet shorthand)
* LOMEZ – (p) Low Altitude Missile Engagement Zone
* LONEOS – (a) Lowell Observatory Near-Earth-Object Search
* LOOGY – (p/a) Lefty One-Out GuY, a sometimes pejorative nickname for the left-handed specialist in baseball
* loq – (p) loquitur (Latin, "(s) he speaks")
* LORTID – (p) LOng Range Target IDentification
* LOS – (i) Line Of Sight
* LOSAT – (i) Line-Of-Sight Anti-Tank (missile)
* LOTA – (i) Licentiate of the Orthodontic Technicians Association
* LOTIS – (a) Livermore Optical Transient Imaging System
* LOTR or LotR – (a) Lord of the Rings
* LOTS – (a) Logistics Over-The-Shore

## LP

* LP
** (i) Linkin Park
** Linkup Point
** Listening Post
** Long Playing (record)
** Louisiana Pacific (cf. LP Field, a former name of the sports venue now known as Nissan Stadium)
* LPC – (i) Linear Predictive Coding
* LPD
** (i) Landing Platform Dock (Navy hull classification)
** Low Probability of Detection
* LPG – (i) Liquefied Petroleum Gas (cf. LNG)
* LPI – (i) Low Probability of Intercept
* LPS
** (i) Landsat Processing System
** (p) LipoPolySaccharide

## LQ

* LQ – (s) Palmyra Atoll (FIPS 10-4 territory code)

## LR

* Lr – (s) Lawrencium
* LR – (s) Liberia (ISO 3166 digram)
* LRAD – (i) Long Range Acoustic Device ("ell-rad")
* LRAS3 or LRAS$^3$ – (i) Long Range Advanced Scout Surveillance System
* LR-ATGW – (i) Long-Range Anti-Tank Guided Weapon
* LRC – (i) Logistics Readiness Center
* LRD – (s) Liberian dollar (ISO 4217 currency code)
* LRF – (p) Laser rangefinder – (i) Low Readiness Forces
* LRGW – (i) Long-Range Guided Weapon
* LRICBM – (i) Limited Range ICBM
* LRIP – (i) Low Rate Initial Production
* LRP – (i) Logistics Release Point
* LRPE – (i) Long-Range Planning Element
* LRS – (i) Long Range Surveillance
* LRU – (i) Line-Replaceable Unit

## LS

* L.S. – (i) Lectori Salutem (Latin, "greetings to the reader"; when the name of the reader is not known in advance)
* LS
** (i) Landing Support
** (s) Lesotho (ISO 3166 digram)
** Liechtenstein (FIPS 10-4 country code)
** (i) locus sigilli (Latin, "place of the seal")
* LSAT – (i) Law School Admission Test (often pronounced as "el-SAT")
* LSD
** (i) Landing Ship, Dock (Navy hull classification)
** librae, solidii, denarii (Latin: Pounds, shillings and pence)
** lyserg-saüre-dietylamid (German "lysergic acid diethylamide")
* LSE
** (i) Least Squares Estimate/Error
** London School of Economics
** London Stock Exchange
* LSI – (i) Large-Scale Integration
* LSIF – (i) Labour Sponsored Investment Fund
* LSL – (s) Lesotho loti (ISO 4217 currency code)
* LSND – (i) Liquid Scintillator Neutrino Detector
* LSO – (s) Lesotho (ISO 3166 trigram)
* LSST – (i) Large Synoptic Survey Telescope
* LST – (i) Landing Ship, Tank (World War II; also known, not entirely affectionately, as "Large Slow Target")
* LSVW – (i) Light Support Vehicle, Wheeled

## LT

* lt – (s) Lithuanian language (ISO 639-1 code)
* Lt – (s) Lieutenant
* LtC – (s) Lieutenant-Colonel (U.S.)
* LT – (s) Lesotho (FIPS 10-4 country code) – Lithuania (ISO 3166 digram)
* LTC – (i) Long-Term Costing
* Ltd – (s) Limited
* LTDP – (i) Long-Term Defence Plan
* LTG – (s) Lieutenant General – (i) Lightning (METAR Code)
* LTI – (i) Linear Time-Invariant
* LTL – (s) Lithuanian litas (ISO 4217 currency code)
* LTM – (i) Acronym for Laughing To Myself
* LTO - (i) Long Term Occasional (substitute teachers)
* LTP – (i) Long-Term Potentiation
* LTU – (s) Lithuania (ISO 3166 trigram)
* ltz – (s) Luxembourgish language (ISO 639-2 code)

## LU

* lu – (s) Tshiluba language (ISO 639-1 code)
* Lu – (s) Lutetium
* LU
** (i) Lefèvre Utile, a French brand of biscuits/cookies
** Loonatics Unleashed
** Love You
* lub – (s) Tshiluba language (ISO 639-2 code)
* LUCA – (a) Last Universal Common Ancestor
* lug – (s) Luganda (ISO 639-2 code)
* LUG – (i) Linux User Group
* LULU – (a) Locally Unwanted Land Use (urbanism)
* LUT – (i) Limited User Test (ing) – Local User Terminal
* LUVW – (i) Light Utility Vehicle, Wheeled
* LUX – (s) Luxembourg (ISO 3166 trigram)

## LV

* lv – (s) Latvian language (ISO 639-1 code)
* LV
** (i) Las Vegas
** (s) Latvia (ISO 3166 digram)
** (i) Launch Vehicle
** Leading Vehicle
** (s) Leave
** (i) Left Ventricle
** Level Valve
** Linking Verb
** Liverpool Victoria
* LVA – (s) Latvia (ISO 3166 trigram)
* LVAD
** (i) Left Ventricular Assist Device
** (p) Low-Velocity Airdrop
* LVEF – (i) Left Ventricular Ejection Fraction
* LVL – (s) Latvian lats (ISO 4217 currency code)

## LW

* Lw – (s) Lawrencium (obsolete 1963)
* LW
** (i) Land Warrior
** Low Water (nautical charts)
* LWO - (i) Latino World Order (professional wrestling stable from WWE
* LWR
** (i) Laser warning receiver
** Light-water reactor (type of nuclear reactor)
* LWRC – (i) Land Warfare Resources Corporation
* LWS – (i) Land Warrior System

## LX

* LX – (s) Luxembourg (amateur radio ITU prefix) – Swiss International Air Lines (IATA code)
* LX – (p) Electrics (theatrical term)

## LY

* LY – (s) Libya (FIPS 10-4 country code; ISO 3166 digram) – Lithuania (amateur radio ITU prefix)
* LYAO – Laugh Your Ass Off
* LYD – (s) Libyan dinar (ISO 4217 currency code)
* LYLAS – (a) Love You Like A Sister

## LZ

* LZ – (s) Bulgaria (amateur radio ITU prefix) – (i) Landing Zone