All articles starting with N

Nephrops norvegicus

Nephrops norvegicus, the Norway lobster or langoustine, is a burrowing decapod of Atlantic and Mediterranean muddy seabeds supporting a major European fishery, with discard survival of 40–67% used in stock assessment and Landing Obligation exemptions.

Nephroptosis

Nephroptosis (floating kidney, wandering kidney, ren mobilis): abnormal descent of the kidney, 5 cm or two vertebral bodies, on standing. Common in women, rarely symptomatic; nephropexy surgery rose after 1881, faded by the 1930s, revived laparoscopically since 1993.

Nephroscopy

Nephroscopy is the endoscopic examination of the kidney's interior via a tract through the flank, serving as the visual and working component of percutaneous nephrolithotomy.

Nephrostomy

Nephrostomy, or percutaneous nephrostomy, is a urology and interventional radiology procedure that drains an obstructed kidney through a tube placed through the skin, first reported by Willard Goodwin in 1955.

Nephrotic syndrome

Nephrotic syndrome, also called idiopathic nephrotic syndrome in children, is heavy proteinuria with hypoalbuminemia, edema, and hyperlipidemia from glomerular disease; minimal change disease predominates in children, 85–90% respond to steroids, and KDIGO 2025 guides treatment.

Nephrotoma

Nephrotoma (tiger crane flies), genus of Tipulidae crane flies erected by Meigen in 1803; about 485 yellow, dark-striped species on all continents except Antarctica; root-feeding soil larvae.

Nephrotomy

Nephrotomy: surgical incision into any part of the kidney (MeSH D000074643), historically for renal stones; anatrophic nephrotomy uses Brödel's avascular plane and remains in limited open use.

Nephroureterectomy

Nephroureterectomy, also known as radical nephroureterectomy, is the en bloc removal of the kidney, entire ureter, and bladder cuff, performed mainly for upper urinary tract urothelial carcinoma.

Nephrovir study

Nephrovir (NCT00577525) was a French population-based case-control study and cohort led by Georges Deschênes testing herpesvirus infection, especially EBV, at onset of childhood idiopathic nephrotic syndrome, with five-year outcome and NEPHROVIR-2/3 follow-ups.

Nephthys

Nephthys (Nebt-het, "Lady of the House") is an ancient Egyptian funerary goddess, sister of Isis, Osiris, and Seth, wife of Seth, mourner of the dead, and protectress of the canopic deity Hapi.

Oct 22, 2026

Népi írók

Népi írók (Hungarian for "folk writers") were the writers of a 1930s Hungarian movement that looked to the peasantry and village as the basis of national renewal.

Oct 20, 2026

Nepidae

Nepidae, water scorpions and water stick insects, a family of aquatic predatory true bugs (Heteroptera) with raptorial forelegs and a caudal breathing siphon; two subfamilies, Nepinae and Ranatrinae, about 230–262 species worldwide.

Nepo baby

Nepo baby, short for nepotism baby, is slang for a famous person whose success is attributed to a famous parent's connections. Used on social media since 2018, popularized by New York magazine's December 2022 "Year of the Nepo Baby" cover.

Nepotism

Nepotism is favoritism granting jobs or advantages to relatives over merit. Covered as improper favoritism, US federal anti-nepotism law 5 U.S.C. § 3110, state variations and gaps, papal and Chinese historical precedents, and evidence on political dynasties.

Nepovirus

Nepovirus: a genus of Secoviridae (Comovirinae, Picornavirales) plant viruses with bipartite positive-sense RNA genomes, 48 species, icosahedral virions, and nematode, pollen, or mite transmission.

Nepra Vallis

Nepra Vallis is a sinuous lava channel on Venus at 1.4°N, 24.2°E, IAU-named in 1997 for an East Slavic Dneper River goddess; 428 km long, widening downstream, carved by fluid slightly more viscous than water.

Nepret Corona

Nepret Corona is a 303-km-wide corona (volcano-tectonic ring feature) on Venus at 52.7°N, 6.8°E, IAU-approved in 1991 and named for an Egyptian grain goddess.

Neprilysin

Neprilysin (NEP, CD10, CALLA, enkephalinase, EC 3.4.24.11) is a membrane zinc metalloprotease degrading natriuretic peptides, enkephalins, bradykinin, and amyloid-β; inhibited by sacubitrilat in heart failure drug Entresto.

NEPSY

NEPSY is a neuropsychological test battery for children ages 3 to 16, developed by Marit Korkman; its current edition, NEPSY-II, yields subtest scores rather than a single IQ-style score.

Sep 19, 2026

Nepsydaz

Nepsydaz (ड नेप्स्य्दज) is a Nepali hip-hop band formed in 2000, among the first Nepali acts to rap in English, known for the 2005 hit "Chudaina".

Nepthys Mons

Nepthys Mons was a 350 km named volcano on Venus at 33.0S, 317.5E in Dione Regio, named in 1991 for the Egyptian goddess of barren lands; the IAU dropped the name in December 2025 after topographic data showed no mons there.

Nepticulidae

Nepticulidae, pygmy moths or pygmy leaf-mining moths, a family of minute Lepidoptera (wingspan under 10 mm) whose monophagous larvae mine leaves; over 850 described species in 22 extant genera, originating in the Early Cretaceous before the main angiosperm radiation.

Oct 15, 2026

Neptun Deep

Neptun Deep is a deepwater natural gas project in the Romanian Black Sea, developed by OMV Petrom and Romgaz, with first gas expected in 2027.

Oct 20, 2026

Neptunalia Dorsa

Neptunalia Dorsa is an 83 km ridge system (dorsa) in the southern hemisphere of asteroid 4 Vesta, centered near 45°S, 81°E, named for the Roman July 23 festival of Neptune and approved by the IAU in 2014.

Neptune

Neptune is the eighth and most distant planet of the solar system, an ice giant found in 1846 through mathematical prediction and flown past by Voyager 2 in 1989.

Neptune (mythology)

Neptune (Neptunus), Roman god originally of fresh water, later identified with Poseidon as god of the sea, earthquakes, and horses; brother of Jupiter and Pluto, husband of Salacia, honored at the Neptunalia on 23 July.

Neptune.ai

Neptune.ai is a Polish-founded machine learning experiment-tracking company spun out of deepsense.ai in Warsaw in 2017, led by Piotr Niedźwiedź and acquired by OpenAI in December 2025.

Neptunes Bellows

Neptunes Bellows (Fuelles de Neptuno) is the roughly 230 m wide, 25 m deep strait between Fildes Point and Entrance Point, Deception Island, the sole ship entrance through the caldera wall into Port Foster, guarded by submerged Ravn Rock.

Neptunia

Neptunia (water mimosa genus) is a pantropical legume genus in Fabaceae, Caesalpinioideae, Mimoseae, with about 20-22 species, two fully aquatic species (N. oleracea, N. plena), touch-sensitive bipinnate leaves, and the edible Thai vegetable water mimosa.