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APT. (song)
"APT." (아파트) is a 2024 pop-punk single by Blackpink's Rosé and Bruno Mars, built on the Korean apartment drinking game and interpolating "Mickey"; it topped the IFPI and Apple Music 2025 global charts and peaked at No. 3 on the Hot 100.
Apta Iulia
Apta Iulia (Colonia Iulia Apta), Roman town of the Vulgientes at modern Apt, Vaucluse, France, in Gallia Narbonensis; destroyed ca. 125 BC, re-founded by Julius Caesar, on the Mediolanum–Arelate road, holding ius Latii.
Aptamer-functionalized nanoparticles
Aptamer-functionalized nanoparticles are drug-delivery or diagnostic particles whose surfaces carry aptamers, short DNA or RNA strands that bind specific molecular targets, most often receptors overexpressed on cancer cells.
AptarGroup
AptarGroup, also known as Aptar, is an American manufacturer of pumps, aerosol valves, and nasal spray systems for pharmaceutical and consumer products, based in Crystal Lake, Illinois.
Aptenodytes
Aptenodytes (Great Penguins) is the basal penguin genus, sister to all others, containing the emperor penguin (A. forsteri) and king penguin (A. patagonicus), the largest and deepest-diving birds, breeding with a single egg on their feet.
Apteryx
Apteryx is the genus of flightless, nocturnal birds known as kiwi, endemic to New Zealand and the only living genus of the family Apterygidae, with five recognized species.
APTES
APTES, or (3-aminopropyl)triethoxysilane, is a widely used organosilane coupling agent that bonds to oxide surfaces like silica and glass while presenting reactive amine groups for attaching biomolecules, polymers, and nanoparticles.
Apthamitra (ಅಪ್ತಮಿತ್ರ)
Apthamitra (ಆಪ್ತಮಿತ್ರ, Aaptha Mithra), 2004 Kannada psychological horror film directed by P. Vasu, produced by Dwarakish, starring Vishnuvardhan, Soundarya, Ramesh Aravind; official remake of Manichitrathazhu, released 27 August 2004, highest-grossing Kannada film of 2004.
Apti Alaudinov
Apti Alaudinov, born 1973, is a Russian lieutenant general commanding the Akhmat special forces and deputy head of the Defense Ministry's Main Military-Political Directorate; a former Chechen police deputy minister, Hero of Russia, and prominent war commentator.
Aptian
The Aptian is a stage of the Early Cretaceous, spanning roughly 121.4 to 113.1 million years ago. Defined by Alcide d'Orbigny in 1840, it is named after Apt, France.
Aptitude
Aptitude is the potential to acquire knowledge or skill, measured by aptitude tests (GATB, DAT, ASVAB, formerly the SAT) distinct from achievement tests; validity, fairness, and declining predictive power define the field.
Aptiv
Aptiv, formerly Delphi Automotive, is a global technology company headquartered in Schaffhausen, Switzerland, supplying software, sensors, and connection systems for vehicles, renamed from Delphi in 2017.
Aptoide
Aptoide is an independent app store founded in 2011 in Lisbon, Portugal, where users download Android apps and games outside the pre-installed ecosystem, with over 430 million users.
Aptronym
Aptronym (also aptonym, French aptonyme): a person's name that matches their job or main characteristics, from apt + patronym, first recorded in a 1919 dictionary. Distinct from nominative determinism, the contested causal claim that names steer careers.
AptX
AptX, also known as Qualcomm aptX, is a family of Bluetooth audio codecs developed by Qualcomm, originating from research at Queen's University Belfast in the late 1980s.
Apu Biswas (অপু বিশ্বাস)
Apu Biswas (অপু বিশ্বাস), born Obonti Biswas in 1989, is a Bangladeshi film actress who was a leading star of Dhallywood in the 2000s and 2010s.
Apu John Joseph
Apu John Joseph (അപ്പു ജോൺ ജോസഫ്), Kerala Congress politician, MLA for Thodupuzha since May 2026 with 84,796 votes and a 44,291 margin, son of P J Joseph, and Kerala Government Chief Whip with cabinet rank.
Apu Nahasapeemapetilon
Apu Nahasapeemapetilon, also called Apu, is the Indian immigrant Kwik-E-Mart owner on The Simpsons, voiced by Hank Azaria from 1990 until 2020, silenced after Hari Kondabolu's 2017 documentary The Problem With Apu, and returned in October 2026 voiced by Sunil Malhotra.
Apuleius
Apuleius (Lucius Apuleius, c. 123 to c. 170) was a Roman writer and Platonist philosopher from Madauros in North Africa, author of The Golden Ass.
Apulia
Apulia (Puglia), southern Italian region forming the boot's heel; capital Bari, about 3.87 million residents, six provinces, over 865 km of coastline, GDP per capita well below the national average.
Apulum
Apulum was the largest urban conurbation of Roman Dacia, at modern Alba Iulia in central Romania, home to Legio XIII Gemina and the seat of the provincial governor.
Apum
Apum was an Amorite kingdom of the upper Khabur region in northern Mesopotamia during the Old Babylonian period, its capital Šehna identified with Tell Leilan in Syria.
Apure (district)
Apure is one of the 23 federal states of Venezuela, located in the southwestern llanos of Venezuela. It borders Colombia, with its capital being San Fernando.
Apure (landform)
Apure (Río Apure) is a whitewater river in western Venezuela, known for having the largest basin of any Orinoco tributary. It drains the Venezuelan Llanos and the Andes.
Apus
Apus is a genus of about 20 species of typical swifts (Apodidae) of Africa, Europe, and Asia, established by Scopoli in 1777; its best-known member, the Common Swift Apus apus, can fly for around 10 months without landing.
Apusomonad
Apusomonads (Apusomonadida) are free-living heterotrophic biflagellate protists that glide on surfaces and feed on bacteria, placed as the sister group to the opisthokonts, the lineage including animals and fungi.
APX
APX, short for approximable, is a complexity class of NP optimization problems with polynomial-time constant-factor approximation algorithms, including vertex cover and MAX-3SAT; a PTAS for any APX-hard problem would imply P = NP.
Apx/Shrm Domain 1
Apx/Shrm Domain 1 (ASD1, SD1), ~90-residue conserved domain of Shroom family proteins (APX/Shroom1 through Shroom4); centrally located, mediates F-actin binding and apical localization for apical constriction; Pfam PF08688, InterPro IPR014800, PROSITE PS51306.
Apx/Shrm Domain 2
Apx/Shrm Domain 2 (ASD2, SD2) is the conserved C-terminal motif defining the Shroom (Shrm1-4) actin-binding protein family; it binds ROCK via a three-segmented coiled-coil dimer, directing actomyosin contraction and apical constriction in neural tube closure and other morphogenesis.
Apyrase
Apyrase (EC 3.6.1.5, ATP diphosphohydrolase, NTPDase) is a calcium-dependent enzyme hydrolyzing ATP and ADP to AMP. Cloned from potato in 1996, it limits extracellular ATP signaling in plants and animals and underlies antiplatelet and immunotherapy drugs.