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Nabla (company)
Nabla is a Paris- and New York-based AI health company founded in 2018 whose Copilot assistant records patient-clinician conversations and drafts structured clinical notes integrated with major EHR systems.
NACA airfoil
A NACA airfoil is a wing-section shape from numbered families developed by the U.S. National Advisory Committee for Aeronautics in the 1920s–1940s, with numerical designations encoding camber and thickness.
NACE MR0175/ISO 15156
NACE MR0175/ISO 15156 is a joint NACE and ISO standard, first published together in 2003, for selecting metallic materials that resist cracking in H₂S-containing sour oil and gas environments.
Nacelle
A nacelle is the enclosed housing, or pod, that surrounds an aircraft engine and connects it to the airframe, incorporating cowling and an insulating firewall.
Nachchaduwa Tank
Nachchaduwa Tank (Nachchaduwa Wewa, නාච්චාදූව වැව) is an ancient irrigation reservoir on the Malwathu Oya near Anuradhapura, Sri Lanka, attributed to Mahasena or Moggallana II, restored 1906 and 1958, irrigating about 2,540 ha.
Nacre-like bulk metallic glass composite
A nacre-like bulk metallic glass composite is a bioinspired structural material in which stiff alumina bricks are bonded by a thin bulk metallic glass mortar, mimicking mollusk nacre for toughness.
Nacre-like composites
Nacre-like composites are synthetic materials engineered to reproduce the layered brick-and-mortar architecture of nacre (mother of pearl), combining strength and toughness in ways conventional materials cannot.
Nadam
Nadam, short for Nesterov-accelerated Adaptive Moment Estimation, is an optimization algorithm for training neural networks that combines Adam with Nesterov momentum, introduced by Timothy Dozat in 2016.
Nadar
Nadar was the pseudonym of Gaspard-Félix Tournachon, a French photographer and balloonist credited with the first aerial photograph in 1858, who also photographed the Paris Catacombs by electric light.
Nadcap
Nadcap, originally the National Aerospace and Defense Contractors Accreditation Program, is an industry-managed program, administered by the Performance Review Institute, accrediting aviation, space, and defense suppliers for critical special processes.
Nadi International Airport
Nadi Airport is the main international airport of Fiji, on the west coast of Viti Levu, handling 97 percent of the country's international passengers and serving as Fiji Airways' hub.
Nadia Marcinko
Nadia Marcinko, born Naďa Marcinková in 1986, is a Slovak-born commercial pilot, flight instructor, and aviation entrepreneur who founded Aviloop and was known online as "Gulfstream Girl."
Nadine (robot)
Nadine is a humanoid social robot modeled on its creator, computer scientist Nadia Magnenat Thalmann, unveiled in 2015 at Nanyang Technological University in Singapore, where she worked as a receptionist.
Nadine Aubry
Nadine Aubry is a French-born American mechanical engineer at Tufts University who works in fluid dynamics, turbulence, and microfluidics, and was elected to the U.S. National Academy of Engineering.
Nadym-Punga Gas Pipeline
The Nadym-Punga Gas Pipeline (Газопровод Надым - Пунга) is a Gazprom natural gas trunk pipeline in western Siberia that has carried Medvezhye field gas toward the Urals and European Russia since 1972.
Nae‐Eung Lee
Nae-Eung Lee is a South Korean materials scientist and professor at Sungkyunkwan University in Suwon, known for flexible and stretchable sensors and for leading bio-inspired artificial tactile receptors published in Nature Materials in 2025.
Nafoora-Amal Oil Pipeline
The Nafoora-Amal Oil Pipeline is a 24-inch crude oil pipeline in Libya's Sirte basin connecting the Nafoora oilfield to the Amal field, built by Wintershall and commissioned in 2013.
Naftogaz
Naftogaz is Ukraine's state-owned oil and gas holding company, created in 1998. It produces most of Ukraine's gas and once carried Russian gas transit to Europe.
Nag (नाग) (missile)
Nag (नाग, "cobra"), also known as Prospina, is an Indian third-generation fire-and-forget anti-tank guided missile developed by DRDO with a range of 500 meters to 4 km.
Nagamaki (長巻)
The nagamaki (長巻) is a Japanese sword with a cord-wrapped hilt as long as its blade, wielded with sweeping two-handed cuts from the Nanboku-chō period through the Sengoku period.
Nagant M1895
The Nagant M1895, also called the Nagant revolver, is a seven-shot service revolver adopted by Imperial Russia in 1895, known for its gas-seal cylinder design.
Nagarjuna Sagar Dam
Nagarjuna Sagar Dam, also known as the Nagarjuna Sagar Project, is a masonry gravity dam on the Krishna River in India, completed in 1967 and irrigating about 900,000 hectares.
Nagarro
Nagarro, also known as Nagarro SE, is a Munich-based digital engineering and technology consulting company founded in 1996 and spun off from Allgeier SE in 2020.
Nagasaki Ironworks
Nagasaki Ironworks (Nagasaki Seitetsusho) was a ship-repair and machine works built by the Tokugawa shogunate in Nagasaki, completed in 1861 as Japan's first Western-style factory.
Nagastra-1
Nagastra-1 is an Indian man-portable loitering munition, or suicide drone, developed by Economic Explosives Limited; the Indian Army received the first of 480 units in June 2024.
Nagato-class battleship
The Nagato class (長門型戦艦) comprised two Imperial Japanese Navy super-dreadnought battleships, Nagato and Mutsu, completed in 1920 and 1921 as the first warships carrying 16-inch guns.
Nagel–Schreckenberg model
The Nagel–Schreckenberg model (NaSch model) is a stochastic cellular automaton for single-lane freeway traffic, introduced by Kai Nagel and Michael Schreckenberg in 1992 and regarded as the prototype traffic cellular automaton.
Nages Roman Bridge
Nages Roman Bridge (Pont d'Argnac), three-arch Roman bridge at Nages-et-Solorgues, Gard, France, still in service over the Rhôny on the ancient Nîmes-Lodève road; distinct from the 1960s concrete Pont du Viau at Nages, Tarn.
Nageshvara Jyotirlinga (नागेश्वर ज्योतिर्लिङ्ग)
Nageshvara Jyotirlinga (नागेश्वर ज्योतिर्लिङ्ग), also called Nageshwar or Nagnath, is one of the twelve Jyotirlingas of Shiva, with three claimed temples in Gujarat, Maharashtra, and Uttarakhand.
Naginata (薙刀)
The naginata (薙刀) is a Japanese polearm with a long curved blade on a wooden shaft, a main samurai battlefield weapon from the late Heian to Muromachi period.