All articles starting with L
25,375 articles
Long-Term Care
Long-term care (LTC) is ongoing medical, personal, and support services for people with lasting physical or cognitive limitations, delivered at home, in community settings, and in residential facilities.
Long-Term Care Insurance
Long-term care insurance (LTCI) covers extended help with daily living at home, in assisted living, or in nursing homes, since Medicare does not pay for it; a shrunken U.S. private market of a few insurers sells stand-alone and hybrid policies.
Long-term depression
Long-term depression (LTD) is a long-lasting weakening of synaptic transmission induced by prolonged low-frequency stimulation, mainly via AMPA receptor internalization; key forms are NMDAR-dependent and mGluR-dependent LTD, studied in hippocampus and cerebellum.
Long-term effects of cannabis
The long-term effects of cannabis are the persistent health consequences of repeated use, including doubled psychosis risk in heavy users, cannabis use disorder, and cognitive harm from adolescent use.
Long-term memory
Long-term memory: retention of information from minutes to a lifetime, divided into declarative (episodic, semantic) and implicit (procedural, priming) systems, stabilized by synaptic and systems consolidation, protein synthesis, and sleep-dependent replay.
Long-term nuclear waste warning messages
Long-term nuclear waste warning messages are communication attempts to deter human intrusion at nuclear waste repositories for 10,000 years, when languages may no longer be understood.
Long-term oxygen therapy
Long-term oxygen therapy (LTOT) is the supervised use of supplemental oxygen, typically at home, for at least 15 hours daily in chronic severe hypoxemia, mainly from COPD.
Long-Term Pavement Performance program
The Long-Term Pavement Performance program is a North American research program studying pavement performance, begun in 1987 under SHRP and run by the Federal Highway Administration.
Long-term potentiation
Long-term potentiation (LTP), originally called long-lasting potentiation, is a long-lasting increase in synaptic strength after brief high-frequency stimulation, first reported by Bliss and Lømo in 1973.
Long-term unemployment
Long-term unemployment is joblessness lasting one year or more under ILO, OECD, and EU definitions, or 27 weeks in the United States, and the odds of finding work fall as a spell lengthens.
Long-wave infrared
Long-wave infrared (LWIR) is the infrared band from 8 to 15 micrometers, also called the thermal infrared, where room-temperature objects emit most of their radiation.
Long-Z
Long-Z is a venture fund manager operating Cayman Islands limited partnerships that raise US capital via SEC Form D filings; Fund I sold $502.5 million.
Long, Long Time (The Last of Us)
"Long, Long Time" is the third episode of The Last of Us's first season, a self-contained love story between Bill and Frank aired on HBO in 2023.
Long. Live. ASAP
Long. Live. ASAP (LONG.LIVE.A$AP) is A$AP Rocky's debut studio album, released January 15, 2013 on Polo Grounds/RCA after his $3 million deal; it debuted at No. 1 on the Billboard 200 and earned Pitchfork Best New Album.
Longan
Longan (Dimocarpus longan, 龙眼, dragon eye) is a subtropical Sapindaceae fruit tree from southern China, grown commercially in China, Thailand, and Taiwan; its white aril fruit is eaten fresh or dried as the TCM medicine Longan Arillus.
Longana
Longana, also called Dominó Cubano, is a Cuban cross-layout domino shedding game for 2-4 players using a double-9 set of 55 tiles, eight tiles each, scored to 100 points, and cited as Mexican Train's traditional ancestor.
Longaniza
Longaniza (Filipino longganisa) is a long, thin pork sausage of Spanish origin, descended from the Roman lucanica of Lucania. Unlike chorizo it is mostly paprika-free, tied as one long rope, and spans Spanish cured styles, Mexican regional versions with achiote, Dominican and Puerto Rican fresh styles, and sweet Filipino longganisa.
Longannet power station
Longannet power station was a 2,400 MW coal-fired power station at Kincardine-on-Forth in Fife, Scotland, generating electricity from 1970 until 2016 as the last coal-fired power station in Scotland.
Longarm quilting
Longarm quilting is the finishing step that stitches a quilt's top, batting, and backing together on a large frame-mounted machine, with the machine head traveling over the fabric.
Longaticum
Longaticum: Roman mansio (roadside station) on the Aquileia–Emona road, at present-day Logatec, Slovenia; attested in the Tabula Peutingeriana and Antonine Itinerary, later part of the Claustra Alpium Iuliarum, abandoned around the 5th century.
Longavi, Nevado de
Nevado de Longaví (also Nevado de Lonquen) is a 3,175 m andesitic stratovolcano in Maule Region, Chile, last erupting 4890 BCE, with the Southern Volcanic Zone's only adakitic dacites and a 2026 seismic swarm that briefly raised its alert to Yellow.
LongBench
LongBench is a bilingual English and Chinese benchmark testing long-context understanding in large language models across 21 tasks, released in August 2023 by Tsinghua University's THUDM group.
Longbow
Longbow: a tall, straight-limbed bow with no recurve, cams, or let-off, held at full draw weight on the fingers. Famous as the medieval English war bow of Crécy and Agincourt; today shot instinctively at 20 to 30 yards in traditional and 3D archery classes.
Longbridge plant
The Longbridge plant was a car factory in Longbridge, Birmingham, England, founded by Herbert Austin in 1905, building Austin, BMC, British Leyland, Rover, and MG vehicles until closure in 2005.
LongCat (coding models)
LongCat is a family of open-weight mixture-of-experts large language models released by the Chinese technology company Meituan beginning in August 2025, positioned for repository-level coding and agentic tool use.
LongCat-Video
LongCat-Video is a 13.6-billion-parameter open-source video generation model released by Meituan in October 2025, known for producing minutes-long videos through iterative continuation and released under the MIT License.
Longchamp (company)
Longchamp is a French luxury leather goods company founded in Paris in 1948 by Jean Cassegrain, known for the foldable Le Pliage bag and still family owned.
Longère
A longère is a traditional rural house of western France, most associated with Normandy and Brittany, laid out as a long, low, single-depth row of dwelling and farm rooms under one roof.
Longest common subsequence
The longest common subsequence (LCS) problem asks for the longest sequence formed from two sequences by deleting symbols, solved by dynamic programming and used in file comparison and biology.
Longest English sentence
Longest English sentence: no single record exists. Literary benchmark is Jonathan Coe's 13,955-word sentence in The Rotters' Club (2001), after Joyce's 4,391-word Ulysses sentence; Dushyant Kumar claims 22,132 words.