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Adverse outcome pathway
An adverse outcome pathway (AOP) is a toxicology framework, introduced by EPA researchers in 2010, that links a chemical's molecular interaction to an adverse health or ecological effect.
Adverse possession
Adverse possession, also called acquisitive prescription, lets a trespasser in open, exclusive, continuous, hostile possession of another's land acquire title after a statutory period, typically 5 to 20 years in the US and 10 to 12 in England.
Adverse selection
Adverse selection, also called antiselection, is an information problem in economics where people who know their own risk or quality trade more, as when high-risk buyers purchase more insurance.
Advertising
Advertising is paid communication that identifies its sponsor, unlike publicity; global spending in 2024 ranged from about $772 billion to over $1 trillion, with digital taking most of it.
Advertising agency
An advertising agency, also called an ad agency, is a business that creates advertising and buys media for clients, historically paid a 15% commission on media billings.
Advertising campaign
An advertising campaign is a coordinated series of messages sharing a single idea or theme, run across several media to achieve an objective such as raising awareness or increasing sales.
Advertising economics of magazines
The advertising economics of magazines is the study of how print magazines set advertising prices and how ads shape revenue, typically the largest single source.
Advice and consent
Advice and consent is the U.S. Senate's Article II power to approve treaties by two-thirds vote and confirm presidential nominations by majority vote, covering judges, ambassadors, and cabinet officers, with modern practice reshaped by executive agreements and cloture reform.
Advice to a Prince
Advice to a Prince is a first-millennium BCE Akkadian admonitory text warning a king that neglecting justice and the privileges of Sippar, Nippur, and Babylon brings ruin.
Advise & Consent
Advise & Consent (1962), Otto Preminger's political drama adapted from Allen Drury's Pulitzer-winning 1959 novel, depicts a Senate confirmation battle over Henry Fonda's Secretary of State nominee, filmed with rare access to Capitol Hill.
Advisory board
An advisory board, also called a board of advisors, is a group appointed to give an organization strategic advice, with non-binding recommendations and no decision-making authority.
Advisory Council on Historic Preservation
The Advisory Council on Historic Preservation (ACHP) is an independent US federal agency created by the National Historic Preservation Act of 1966. It administers Section 106 review, issues 36 CFR part 800, and in 2026 proposed major revisions to those regulations.
Advocaat
Advocaat (advocatenborrel) is a Dutch egg liqueur of egg yolk, sugar, and brandy; EU law requires at least 14% ABV, 140 g/L egg yolk, and 150 g/L sugar, distinguishing it from thinner liqueur with egg.
Advocacy
Advocacy refers to efforts by individuals or groups to shape decision-making in political, economic, and social institutions. It includes lobbying, campaigning, public education, and litigation, and differs from activism and lobbying in scope.
Advocacy group
Advocacy group: an organized private association seeking to influence public policy or opinion without contesting elections; also called interest group, pressure group, or public interest group. Defined by Andrews and Edwards as making public interest claims; influence spans agenda setting, lobbying, and implementation.
AdvoCare
AdvoCare: Texas dietary supplement and Spark energy drink company founded 1993 by Charles Ragus; formerly multi-level marketing, ended by 2019 FTC $150 million pyramid scheme settlement and MLM ban.
Advocate
An advocate pleads or promotes another's interests; in law, a barrister, solicitor, or CILEx advocate representing clients in courts and tribunals, with higher rights of audience needed for higher courts.
Advocate Achinta Aich
Advocate Achinta Aich (অ্যাডভোকেট অচিন্ত্য আইচ) is a Bengali courtroom drama web series on hoichoi, directed by Joydeep Mukherjee, starring Ritwick Chakraborty as a notary lawyer; three seasons from 2024, 2025, and 2026.
Advocate Anjali Awasthi
Advocate Anjali Awasthi (एडवोकेट अंजलि अवस्थी), also retitled Aarti Anjali Awasthi, is a Hindi StarPlus courtroom drama (2024–2026), a remake of Bengali Geeta LLB starring Shritama Mitra and Ankit Raizada, ending 31 May 2026.
Advocate Health
Advocate Health, also Advocate Health Care (Illinois), Atrium Health (Carolinas, Georgia, Alabama), and Aurora Health Care (Wisconsin), is the third-largest U.S. nonprofit integrated health system, formed December 2, 2022, headquartered in Charlotte, NC, with 69 hospitals across eight states and $6.27 billion in 2025 community benefit.
Adwa (ዓድዋ)
Adwa (ዓድዋ, Aduwa) is a market town and woreda in Tigray, Ethiopia, on the Aksum–Adigrat highway, site of the 1896 Battle of Adwa where Menelik II defeated Italy, and a 2026 conflict flashpoint.
Adwaita (অদ্বৈত)
Adwaita (অদ্বৈত), male Aldabra giant tortoise at Alipore Zoo, Kolkata; died March 2006 at an unverified estimated 250-255 years, said to be one of four tortoises gifted to Robert Clive.
Adwaita Nayar
Adwaita Nayar is an Indian business executive who co-founded Nykaa, founded Nykaa Fashion in 2018, and leads House of Nykaa Brands; she is the daughter of founder Falguni Nayar.
Adware
Adware, short for advertising-supported software, displays advertisements on a user's device, often without consent, to generate revenue; security firms classify it as a potentially unwanted program.
Adwoa Aboah
Adwoa Aboah: British model, activist, and entrepreneur, founder of mental-health platform Gurls Talk (2015), British Fashion Council Model of the Year 2017, Enninful's first British Vogue cover, and founder of the bag brand The Veil.
ADX Florence
ADX Florence is the United States' only federal supermax prison, located in Florence, Colorado. It opened in 1995 and houses high-profile inmates like Dzhokhar Tsarnaev.
Ady Arie
Ady Arie is a professor of electrical engineering at Tel Aviv University who works in nonlinear, quantum, and electron optics, known for Airy beams and the all-optical Stern–Gerlach effect.
Ady Stern
Ady Stern, born 1960, is an Israeli theoretical condensed matter physicist at the Weizmann Institute of Science, known for the fractional quantum Hall effect and topological quantum computation.
Adyaksha (ಅಧ್ಯಕ್ಷ)
Adhyaksha (ಅಧ್ಯಕ್ಷ, Adhyaksha), 2014 Kannada comedy directed by Nanda Kishore, starring Sharan, Hebah Patel, Chikkanna; remake of Tamil Varuthapadatha Valibar Sangam, released 15 August 2014, music Arjun Janya.
Adycha
Adycha (Адыча), 715 km river in northern Yakutia, Russia; largest right tributary of the Yana, rising in the Chersky Range, snow- and rain-fed, navigable 223 km, with gold placers and changing flow since the 1990s.