All articles A–Z
519,064 articles
Insider–outsider theory
Insider–outsider theory is an economic theory of wage setting in which incumbent employees' market power lets involuntary unemployment persist, founded by Assar Lindbeck and Dennis Snower in the mid-1980s.
Insidious (film series)
Insidious is an American supernatural horror film series created by Leigh Whannell and James Wan, following the Lambert family, whose son falls into a coma and astral projects into a dimension called The Further.
Insidious (film)
Insidious is a 2010 American supernatural horror film directed by James Wan and written by Leigh Whannell, about a comatose boy trapped in a realm called The Further.
Insidious: Chapter 2
Insidious: Chapter 2, also known as Insidious 2, is a 2013 American supernatural horror film directed by James Wan, the direct sequel to Insidious, starring Patrick Wilson and Rose Byrne.
Insidious: Chapter 3
Insidious: Chapter 3, also known as Insidious 3, is a 2015 American supernatural horror film directed by Leigh Whannell, a prequel focusing on psychic Elise Rainier and teenager Quinn Brenner.
Insidious: Out of the Further
Insidious: Out of the Further (2026) is the sixth Insidious horror film, directed by Jacob Chase, starring Amelia Eve as Gemma, who can bring entities out of the Further, with Lin Shaye returning as Elise Rainier; it grossed $170.7 million worldwide.
Insidious: The Last Key
Insidious: The Last Key, also known as Insidious 4, is a 2018 American supernatural horror film directed by Adam Robitel and starring Lin Shaye as Elise Rainier.
Insidious: The Red Door
Insidious: The Red Door, also known as Insidious 5, is a 2023 American supernatural horror film directed by Patrick Wilson, the fifth film in the Insidious franchise.
Insight
Insight, known in German as Aha-Erlebnis, is the sudden comprehension of a problem's solution without gradual progress, bringing a felt "aha" moment of surprise and pleasure.
InSight
InSight was a NASA Discovery-program Mars lander that operated on Mars from November 2018 to December 2022, placing the first seismometer on the Martian surface and recording 1,319 marsquakes.
Insight Equity
Insight Equity is a private equity firm founded in 2002 and based in Southlake, Texas, making $25 million to $100 million control investments in underperforming, asset-intensive middle-market companies.
Insight Partners
Insight Partners, formerly Insight Venture Partners, is a New York venture capital and private equity firm founded in 1995 by Jeff Horing and Jerry Murdock, with over $90 billion under management.
Insight Pharmaceuticals Corp
Insight Pharmaceuticals Corporation was a privately held OTC healthcare company in Bucks County, Pennsylvania, known for Monistat and e.p.t., acquired by Prestige Brands in 2014.
Insight Segmentation and Registration Toolkit
The Insight Segmentation and Registration Toolkit (ITK) is an open-source C++ library for N-dimensional image segmentation and registration, created in 1999 for the US National Library of Medicine.
INSIGHT trial
INSIGHT trial (Intervention Nurses Start Infants Growing on Healthy Trajectories, NCT01167270): Penn State randomized trial of nurse-delivered responsive parenting for first-time mothers, reducing rapid infant weight gain and overweight at age 1; distinct from SWOG S2414 and tepotinib INSIGHT trials.
Insignia
Insignia (Latin insignia, "emblems") are badges and symbols identifying organizational membership, military rank, branch, or qualification, from Roman standards and medieval heraldry to modern chevrons, stars, and nationally registered heraldic devices.
Insignia (Xbox)
Insignia is a free, community-run, reverse-engineered replacement for Microsoft's original Xbox Live servers, restoring online multiplayer to the original Xbox after the 2010 shutdown.
Insignificance
Insignificance is a 1985 Nicolas Roeg film adapted by Terry Johnson from his play, in which unnamed characters based on Einstein, Monroe, DiMaggio, and McCarthy meet in a 1954 New York hotel room; it competed at Cannes 1985.
Insila kaShaka
Insila kaShaka is a 1930 historical novel by John Langalibalele Dube, widely reported to be the first novel in isiZulu, telling of Jeqe, King Shaka's body servant.
Insilico Medicine
Insilico Medicine is a Hong Kong-based, AI-driven drug discovery company founded in 2014 and listed in Hong Kong in 2025; its lead drug rentosertib entered Phase III trials in 2026.
Insinger Papyrus
The Insinger Papyrus is a Demotic Egyptian wisdom instruction of over 800 maxims in numbered chapters, a six-meter roll held in Leiden since its 1895 purchase from collector Jan Herman Insinger.
insitro
insitro, Inc. is a machine-learning-driven drug discovery company founded by Daphne Koller in 2018 in South San Francisco, with programs in ALS and metabolic disease.
Insitu
Insitu, Inc. is an American unmanned aircraft manufacturer in Bingen, Washington, founded in 1994, best known for the ScanEagle drone and owned by Boeing since 2008.
Inslaw
Inslaw, Inc., Washington D.C. software firm of William and Nancy Hamilton, developed the PROMIS case-management system; its dispute with the Justice Department led to bankruptcy, the 1987 Bason ruling, and congressional investigations.
INSM1
INSM1 (insulinoma-associated 1, IA-1), a zinc-finger transcriptional repressor gene on 20p11.23, marks neuroendocrine differentiation in development and is a WHO-suggested nuclear immunohistochemical marker for neuroendocrine tumors.
Insolation
Insolation is the amount of incoming solar radiation received by a surface or region over a given time, measured as irradiance in watts per square meter.
Insolvency
Insolvency: the financial state of a debtor unable to pay debts as they mature or with liabilities exceeding fair-market asset values. Distinct from bankruptcy procedures; traced to England's 1542 Act, governed today by UNCITRAL and World Bank ICR standards.
Insolvency and Bankruptcy Code, 2016 (दिवाला और दिवालियापन संहिता, 2016)
Insolvency and Bankruptcy Code, 2016 (दिवाला और दिवालियापन संहिता, 2016), or IBC, is India's consolidated insolvency law, Act No. 31 of 2016, creating a creditor-in-control, time-bound CIRP under NCLT with IBBI as regulator, replacing fragmented pre-2016 insolvency statutes.
Insomnia
Insomnia is a sleep disorder of difficulty falling or staying asleep despite adequate opportunity, chronic at 3+ nights/week for 3+ months, affecting about 10-15% of adults, treated first with CBT-I.
Insomnia (2002 film)
Insomnia is a 2002 American psychological thriller directed by Christopher Nolan, a remake of a 1997 Norwegian film, starring Al Pacino as a detective in Alaska opposite Robin Williams.