All articles starting with G
18,970 articles
Grubbenvorst-Lottum
Grubbenvorst-Lottum: Pleiades gazetteer ancient place (BAtlas 11 G1) on the Meuse in Dutch Limburg, with prehistoric urnfields, Roman settlement and altar finds at Lottum, and a debated Roman fort.
Grubbs catalyst
Grubbs catalyst is a well-defined ruthenium carbene complex reported by Robert H. Grubbs in 1992 that catalyzes olefin metathesis, work honored with the 2005 Nobel Prize in Chemistry.
Grubby
Grubby (Manuel Schenkhuizen, born 1986) is a Dutch esports player and caster, Warcraft III Orc legend, two-time WCG champion (2004, 2008), 44 world-championship podiums, later StarCraft II Protoss and Age of Empires II host and caster.
Grubhub
Grubhub: Chicago-founded (2004) American online food ordering and delivery platform, merged with Seamless 2013, IPO 2014 (NYSE: GRUB), bought by Just Eat Takeaway for $7.3B in 2021, sold to Wonder for $650M in 2025; about 8% U.S. market share.
Grübler-Kutzbach criterion
The Grübler-Kutzbach criterion, also called the Chebychev-Grübler-Kutzbach formula, is a counting formula that predicts a mechanism's mobility from its links and joints, with planar and spatial forms.
GrubMarket
GrubMarket is a San Francisco food supply-chain technology company founded by CEO Mike Xu in 2014, distributing fresh produce and meat while selling software to wholesalers and grocers.
Grudge Match
Grudge Match is a 2013 Peter Segal sports comedy in which Robert De Niro and Sylvester Stallone play retired Pittsburgh boxers, Billy 'The Kid' McDonnen and Henry 'Razor' Sharp, revived by Kevin Hart's promoter for a viral final bout; it earned 31% on Rotten Tomatoes and $29.8M domestically.
Grudziądz-Rządz
Grudziądz-Rządz (Rondsen) site 1: Oksywie and Wielbark culture cemetery near Grudziądz, Poland, excavated 1883–1889 by S. Anger; over 1,600 artifacts, mostly lost in World War II.
Gruel
Gruel: a thin porridge of cereal boiled in water or milk, sipped rather than eaten; used historically as infant weaning food, Victorian sickroom and workhouse fare, and famine food.
Gruemberger (lunar crater)
Gruemberger is a 91.50-km-wide IAU-named impact crater on the Moon's southern highlands, centered at 67.04°S, 10.30°W, near Moretus, Short, Cysatus, and Newton; named via Blagg and Müller's 1935 Named Lunar Formations.
Gruening Glacier
Gruening Glacier (Spanish: Gruening, glaciar; Gruening, Ventisquero) is a broad valley glacier on the east coast of Palmer Land, Antarctica, flowing southeast into Hilton Inlet; discovered by the USAS in 1940 and named for Ernest H. Gruening.
Gruffalo Granny
Gruffalo Granny is a 2026 children's picture book by Julia Donaldson and Axel Scheffler, the third Gruffalo book and the first in over 20 years.
Gruidae
Gruidae, the crane family of Gruiformes: 15 species in two subfamilies (Balearicinae crowned cranes, Gruinae true cranes), sister to limpkins and trumpeters, Eocene origin, threatened by habitat loss.
Gruiformes
Gruiformes, an order of birds comprising rails, flufftails, finfoots, trumpeters, cranes, and the limpkin; once a larger artificial assemblage, now reduced by molecular phylogenetics, with Grues confirmed monophyletic but deep placement among Neoaves unresolved.
Gruinard Island
Gruinard Island, off northwest Scotland, was contaminated with anthrax spores during British biological warfare trials in 1942-43, decontaminated with formaldehyde in seawater in 1986, and returned to its owners in 1990.
Gruit
Gruit, also spelled gruyt or grut, is a mixture of herbs and spices used to flavor, bitter, and preserve beer before hops became dominant in Europe.
Grumman
Grumman, formally the Grumman Aircraft Engineering Corporation, was an American aerospace company founded in 1929 that built Navy carrier aircraft and the Apollo Lunar Module.
Grumman A-6 Intruder
The Grumman A-6 Intruder is a two-seat, twin-turbojet, carrier-based all-weather attack aircraft built by Grumman for the US Navy and Marine Corps, in service from 1963 to 1997.
Grumman American AA-1
The Grumman American AA-1, known as the Yankee, is a two-seat low-wing light aircraft produced from 1969 to 1978 and built with distinctive bonded aluminum construction.
Grumman C-2 Greyhound
The Grumman C-2 Greyhound was a twin-turboprop US Navy carrier onboard delivery aircraft, derived from the E-2 Hawkeye, that flew personnel, mail, and cargo to carriers from the mid-1960s until 2026.
Grumman F-11 Tiger
The Grumman F11F Tiger, redesignated F-11A in 1962, was a single-seat Navy fighter built by Grumman; in fleet service only a few years, it flew with the Blue Angels until 1968.
Grumman F-14 Tomcat
The Grumman F-14 Tomcat is a supersonic, two-seat, variable-sweep-wing fighter that served the United States Navy from the mid-1970s until 2006 as a fleet defense interceptor and strike aircraft.
Grumman F-9 Cougar
The Grumman F-9 Cougar, also known as the F9F Cougar, was the United States Navy's first swept-wing, carrier-based jet fighter, developed from the F9F Panther.
Grumman F4F Wildcat
The Grumman F4F Wildcat was an American carrier-based fighter of the United States Navy and Marine Corps in World War II, called the Martlet in British service.
Grumman F6F Hellcat
The Grumman F6F Hellcat was an American carrier-based fighter of World War II, built to outfight the Zero and credited with 75 percent of Navy aerial victories.
Grumman F7F Tigercat
The Grumman F7F Tigercat, also known as the F7F Tigercat, was a twin-engine US Navy fighter of 1943 that arrived too late for World War II and served as a Marine night fighter in Korea.
Grumman F8F Bearcat
The Grumman F8F Bearcat was a carrier-borne fighter built for the United States Navy, first flown in August 1944, too late for World War II.
Grumman F9F Panther
The Grumman F9F Panther was a carrier-based jet fighter and ground-attack aircraft that served as the U.S. Navy's primary jet fighter during the Korean War, first flying in 1947.
Grumman HU-16 Albatross
Grumman HU-16 Albatross (SA-16A/B, UF-1, HU-16E): twin-engine amphibious flying boat, 466 built 1947-1961, used by USAF, Navy, and Coast Guard for air-sea rescue and utility roles, exported to about two dozen countries, retired from US service by 1983.
Grumman Labyrinthus
Grumman Labyrinthus, a Titan labyrinth terrain, largest of 25 named labyrinthi at 540 km, in south Xanadu at 35.3S 106.8W; IAU-named 2017 after a Dune planet; karst-like organic plateau with closed valleys.