All articles A–Z
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Infidel
Infidel, from Latin infidelis meaning "unfaithful", denotes a person who does not believe a given religion at all, originally a non-Christian, and conventionally translates the Arabic kāfir.
Infidelity
Infidelity is secret emotional, sexual, or romantic behavior that breaks a relationship's agreed exclusivity; the sexual form in marriage is adultery, a leading cause of divorce and separation.
Infield fly rule
Infield fly rule, baseball rule (OBR 2.00, NCAA 2-48): batter is auto-out on an ordinary-effort infield popup with first and second or bases loaded, under two outs, preventing cheap double plays; enacted 1895.
Infiernillo
Infiernillo (GVP 357041) is a late-Pleistocene to Holocene basaltic andesite volcanic field in Mendoza, Argentina, along the Río Salado near Malargüe; last eruption 6890 BCE at Volcán Hoyo Colorado; distinct from Mexican and Salvadoran places named Infiernillo.
Infighting in the Sinaloa Cartel
The infighting in Sinaloa Cartel is an armed conflict between Los Chapitos and La Mayiza, which began in September 2024 following the arrest of Ismael "El Mayo" Zambada.
Infigratinib
Infigratinib (Truseltiq, BGJ398), an oral FGFR1-3 kinase inhibitor by QED Therapeutics/Helsinn, won FDA accelerated approval May 28, 2021 for FGFR2-rearranged cholangiocarcinoma (ORR 23.1%) and was withdrawn May 16, 2024.
Infiltration (hydrology)
Infiltration, also called water infiltration, is the movement of water from the land surface into soil through pores, feeding the root zone and recharging aquifers.
Infiltration capacity
Infiltration capacity, also called infiltrability, is the maximum rate at which soil can absorb water at its surface, a concept introduced by Robert E. Horton in the early 1940s.
Infiltration tactics
Infiltration tactics, also called stormtrooper or Hutier tactics, are WWI German small-unit assault methods that bypass strongpoints to strike rear areas; refined at Verdun, Riga, and Caporetto and used in the 1918 offensives.
Infiltrative and storage cardiomyopathy
Infiltrative and storage cardiomyopathy is heart muscle disease caused by substances deposited within the myocardium, including cardiac sarcoidosis, hemochromatosis, Fabry disease, and glycogen storage diseases like Pompe and Danon.
Infiltrative optic neuropathy
Infiltrative optic neuropathy (ICD-11 9C40.6) is optic nerve dysfunction caused by cells infiltrating the nerve, most often leukemia, lymphoma, metastases, or granulomatous disease; treated with radiation and intrathecal chemotherapy.
Infimum and supremum
The infimum and supremum, also called the greatest lower bound and least upper bound, generalize the minimum and maximum of a set of real numbers.
Infineon AURIX
Infineon AURIX is a family of 32-bit automotive microcontrollers by Infineon Technologies, built on the TriCore architecture combining microcontroller, RISC processor, and DSP in one core.
Infineon Technologies
Infineon Technologies AG is a German semiconductor manufacturer headquartered in Neubiberg near Munich, spun off from Siemens in 1999 and focused on automotive and power semiconductors.
Infinera
Infinera was an American optical networking company headquartered in Sunnyvale, California, founded in 2000, known for photonic integrated circuits and acquired by Nokia in February 2025.
Infineum
Infineum, known in Chinese as 润英联, is a British specialty chemicals company formed in 1999 by ExxonMobil and Shell to make fuel and lubricant additives.
Infini-attention
Infini-attention is a long-context attention mechanism for transformers, introduced by Google researchers in April 2024, that combines local attention with a compressive memory to process effectively unbounded input streams.
InfiniBand
InfiniBand, also known as InfiniBand Architecture, is an industry-standard switched fabric interconnect for data centers, built on RDMA and widely used in high-performance computing and AI clusters.
Infiniminer
Infiniminer, also called Infiniminer by Zachtronics, is Zach Barth's April 29, 2009 free multiplayer block-world mining game; its leaked source and team-based dig-and-build play directly inspired Minecraft and the block-game genre.
Infinitary logic
Infinitary logic, also called an infinitary language, is a family of extensions of first-order logic allowing infinitely long formulas; the best-studied case, L(ω₁,ω), permits countably infinite conjunctions and disjunctions.
Infinite (Eminem album)
Infinite is Eminem's debut studio album, released November 12, 1996 on Web Entertainment; a cassette-and-vinyl-only Detroit underground record that sold poorly and preceded the Slim Shady persona.
Infinite (film)
Infinite (2021 film), directed by Antoine Fuqua, starring Mark Wahlberg and Chiwetel Ejiofor; sci-fi action thriller based on D. Eric Maikranz's novel The Reincarnationist Papers, released June 10, 2021 exclusively on Paramount+ after skipping theaters.
Infinite (Mobb Deep album)
Infinite is Mobb Deep's ninth and final album, released October 10, 2025 on Mass Appeal; assembled by Havoc and the Alchemist from unreleased Prodigy verses after his 2017 death.
Infinite (YouTuber)
Infinite is the main YouTube channel of Caylus Cunningham (born 1997), an American creator also known as Caylus and CaylusBlox, with 60M+ subscribers, the Roblox channel ranked #2 creator of 2025, and the game studio CayPlay Studios.
Infinite Challenge (무한도전)
Infinite Challenge (무한도전, Muhan Dojeon) is MBC's Korean real-variety comedy show, launched 6 May 2006 from the 2005 corner Reckless Challenge under producer Kim Tae-ho, known for unscripted challenges, the Song Festival, and 563 episodes until 2018.
Infinite Craft
Infinite Craft (neal.fun) is a 2024 browser sandbox game by Neal Agarwal: combine Water, Fire, Wind, and Earth endlessly; Meta's Llama 2 generates results for novel pairs, cached globally, with First Discovery badges.
Infinite Crisis
Infinite Crisis is DC Comics' 7-issue 2005-2006 crossover miniseries by Geoff Johns, sequel to Crisis on Infinite Earths, in which Multiverse survivors return, ending the single-Earth era and restoring a limited Multiverse.
Infinite divisibility (probability)
Infinite divisibility, also called an infinitely divisible distribution, is a probability distribution representable as a sum of n independent, identically distributed variables for every n.
Infinite Flight
Infinite Flight is a mobile flight simulator for iOS and Android, first released in 2011, featuring global flight operations, live multiplayer, and human air traffic control.
Infinite Icon
Infinite Icon is Paris Hilton's second studio album, released September 6, 2024 on 11:11 Media; 12 dance-pop tracks executive produced by Sia, debuting at No. 38 on the Billboard 200, 18 years after her debut Paris.