All articles starting with L
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Leaky bucket
The leaky bucket is a traffic-control algorithm that models data as water in a bucket draining at a fixed rate, used for shaping and policing network traffic.
Leaky integrate-and-fire model
The leaky integrate-and-fire (LIF) model is a simplified mathematical model of a neuron, proposed by Louis Édouard Lapicque in 1907, that fires when its membrane potential reaches a threshold.
Leaky wave antenna
A leaky wave antenna (LWA) is a traveling-wave antenna that leaks energy along an open waveguide, scanning its beam by frequency without phase shifters or mechanical steering.
Leamington Spa
Royal Leamington Spa (formerly Leamington Priors) is a spa town in Warwickshire, England, on the River Leam. Its mineral springs, Royal Pump Rooms of 1814, and 1838 'Royal' title from Queen Victoria distinguish it.
Leamon King
Leamon King (1936–2001), American sprinter and 1956 Melbourne Olympic 4x100m relay gold medalist in world-record 39.5; tied 100m world record 10.1 twice and 100-yard record 9.3 in 1956; ran for California, Berkeley.
Lean (drug)
Lean, also called purple drank, sizzurp, or dirty Sprite, is a Houston-originated recreational drink of codeine-promethazine cough syrup mixed with soda and candy, popularized by Southern hip hop and linked to respiratory depression, addiction, and overdose deaths.
Lean accounting
Lean accounting is a management accounting system designed for lean organizations, using value stream costing, box scores, and target costing instead of standard cost accounting, and is associated with Brian Maskell and Frances Baggaley.
Lean In
Lean In: Women, Work, and the Will to Lead is Sheryl Sandberg's 2013 Knopf bestseller, co-written with Nell Scovell, urging women to overcome internal barriers at work; it spawned LeanIn.org, Lean In Circles, and major structural-feminist criticism.
Lean launchpad
Lean LaunchPad is an evidence-based entrepreneurship course created by Steve Blank at Stanford University in 2011, in which teams test business model hypotheses through weekly customer interviews; the NSF adopted it as I-Corps.
Lean manufacturing
Lean manufacturing, also called lean production or lean management, is a management system aimed at eliminating waste, derived from Toyota's production system and popularized in 1990.
Lean NOx trap
The lean NOx trap (LNT), also called a NOx adsorber, is an automotive emission-control device that stores and reduces nitrogen oxides from lean-burn engine exhaust.
Lean On
Lean On (2015): Major Lazer and DJ Snake single featuring Danish singer MØ, from Peace Is the Mission on Mad Decent. Spotify's most-streamed song in November 2015; video filmed in India, over 3.9 billion views; RIAA Diamond.
Lean on Me (film)
Lean on Me is a 1989 Warner Bros. biographical drama directed by John G. Avildsen, starring Morgan Freeman as real Paterson, New Jersey principal Joe Clark of Eastside High; released March 3, 1989, grossed $28.9M.
Lean on Me (song)
Lean on Me is a 1972 Bill Withers song from Still Bill, written on a Wurlitzer piano about his West Virginia coal-town childhood. It hit No. 1 on the Hot 100, and Club Nouveau's 1987 cover did too; it inspired the 1989 Joe Clark film.
Lean on Pete
Lean on Pete is a 2017 drama by Andrew Haigh, adapted from Willy Vlautin's 2010 novel, starring Charlie Plummer as a teen who journeys across the Pacific Northwest with a failing racehorse; premiered at Venice 2017, released by A24 in 2018.
Lean premixed combustion
Lean premixed combustion is a gas turbine combustion mode that thoroughly mixes fuel and air before burning, cutting thermal NOx emissions to 9 to 25 ppm and marketed as DLN or DLE.
Lean Six Sigma
Lean Six Sigma is a process-improvement methodology combining Lean's waste elimination with Six Sigma's statistical reduction of process variation, applied through the structured DMAIC cycle.
Lean software development
Lean software development, also known as Lean programming, applies principles from Toyota's product development system to software, formulated as seven principles by Mary and Tom Poppendieck in 2003.
Lean startup
The lean startup is a method for building new businesses under extreme uncertainty through rapid, low-cost experiments, developed by Eric Ries and popularized in his 2011 book.
Lean-burn
Lean-burn is an engine operating mode in which the air-fuel mixture contains more air than needed for complete combustion, improving efficiency and lowering NOx emissions.
Leana Deeb
Leana Deeb, Palestinian-Uruguayan American fitness creator and certified personal trainer (born 2001, Dallas), founder of Uplift You app and Gymshark modest activewear line; TIME100 Creators 2025, 18M+ followers.
Leana Wen
Leana Wen, American emergency physician and public health professor at George Washington University; former Baltimore health commissioner (2015-2018) and Planned Parenthood president (2018-2019); CNN medical analyst and Washington Post columnist known for COVID-19 commentary.
Leanan sídhe
Leanan sídhe (leannán sídhe, "fairy lover"; Scottish leannan sìth, Manx lhiannan shee) is an Irish fairy woman who inspires mortal poets while draining their lives. The fatal-muse version comes mainly from W. B. Yeats's 1888 "Gaelic muse," layered over older Gaelic fairy-lover beliefs.
Leander Dendoncker
Leander Dendoncker, Belgian defensive midfielder (born 1995, Passendale), ex-Anderlecht, Wolves, Aston Villa, Napoli loan, Real Oviedo; now HNK Hajduk Split; 32 Belgium caps, 2018 and 2022 World Cups.
Leander Paes
Leander Paes (born 1973, Kolkata), Indian tennis great; 18 Grand Slam doubles titles (8 men's, 10 mixed), 1996 Olympic singles bronze, seven Olympics, record Davis Cup doubles wins, Hall of Fame 2024.
Leander-class frigate
Leander-class frigate (Type 12I): British Improved Type 12 general-purpose frigates, 26 built 1959–1973 in three batches; steam-turbine, helicopter-carrying ASW ships exported to New Zealand, Chile, India, the Netherlands and others.
Leandrina Bulzacchi
Leandrina Bulzacchi (1912–?) was an Italian middle-distance runner who won eleven national titles and set a 3 × 800 meters relay world record in 1937.
Leandro Bacuna
Leandro Bacuna (Leandro Jones Johan Bacuna), born 1991 in Groningen, is a midfielder/right-back for Iğdır FK and captain of Curaçao, a Netherlands U21 player who became Curaçao's most-capped player and led it at the 2026 World Cup.
Leandro Barbosa
Leandro Barbosa (Leandrinho, the Brazilian Blur), born 1982, is a Brazilian guard, 2003 draft pick 28, 2007 NBA Sixth Man of the Year with Phoenix, 2015 champion with Golden State, and later a Warriors and Kings assistant coach.
Leandro Damião
Leandro Damião (Leandro Damião da Silva dos Santos), Brazilian centre-forward born 1989 in Jardim Alegre. Copa Libertadores 2010 and Recopa 2011 winner with Internacional, 108 club goals, Olympic silver at London 2012, 18 Brazil caps; retired April 2025.