18-letter words containing a, r, n, o
- gastroduodenostomy — See under gastroenterostomy.
- gastroenterologist — the study of the structure, functions, and diseases of digestive organs.
- general confession — a prayer confessing sins
- general contractor — a person who contracts to construct a building or buildings, for a stipulated sum, in accordance with certain plans and specifications, or to remodel or build an addition to a building
- general precession — the precession that results from both lunisolar precession and planetary precession; precession of the equinoxes.
- generating station — a power station
- genetic algorithms — genetic algorithm
- gensym corporation — (company) A company that supplies software and services for intelligent operations management. Common applications include quality management, process optimisation, dynamic scheduling, network management, energy and environmental management, and process modelling and simulation. Their products include G2.
- gentleman-commoner — (formerly) a member of a class of commoners enjoying special privileges at Oxford University.
- gilbert and george — a team of artists, Gilbert Proesch, Italian, born 1942, and George Passmore, British, born 1943: noted esp for their photomontages and performance works
- give a person five — to greet or congratulate someone by slapping raised hands
- give someone a row — to scold someone; tell someone off
- go round and round — If you say that something is going round and round in your head, you mean that you can't stop thinking about it.
- going to jerusalem — musical chairs.
- golden bantam corn — a horticultural variety of sweet corn having yellow kernels.
- golden gate bridge — a bridge connecting N California with San Francisco peninsula. 4200-foot (1280-meter) center span.
- golden-brown algae — a group of mostly marine, motile algae of the phylum Chlorophyta, characterized by the presence of the pigments chlorophyll, carotene, and xanthophyll, which impart golden to yellow-brown colors.
- good samaritan law — a law that exempts from legal liability persons, sometimes only physicians, who give reasonable aid to strangers in grave physical distress.
- gooseneck barnacle — goose barnacle
- grains of paradise — Usually, grains of paradise. one of the pungent, peppery seeds of an African plant, Aframomum melegueta, of the ginger family, used to strengthen cordials and in veterinary medicine.
- grampian mountains — a mountain system of central Scotland, extending from the southwest to the northeast and separating the Highlands from the Lowlands. Highest peak: Ben Nevis, 1344 m (4408 ft)
- grand canyon state — Arizona (used as a nickname).
- grand council fire — a formal gathering of camp fire members requiring a minimum attendance of three troops.
- granulation tissue — tissue formed in ulcers and in early wound healing and repair, composed largely of newly growing capillaries and so called from its irregular surface in open wounds; proud flesh.
- grass-of-parnassus — any plant belonging to the genus Parnassia, of the saxifrage family, growing in marshy areas, having broad, smooth leaves and a single, pale flower.
- grasshopper engine — a steam engine having a piston attached to one end of a beam that is hinged to an upright at the other end, the connecting rod being suspended from near the center of the beam.
- gravitational lens — a heavy, dense body, as a galaxy, that lies along our line of sight to a more distant object, as a quasar, and whose gravitational field refracts the light of that object, splitting it into multiple images as seen from the earth.
- gravitational mass — the mass of a body as measured by its gravitational attraction for other bodies.
- gravitational pull — force of gravity
- gravitational wave — (in general relativity) a propagating wave of gravitational energy produced by accelerating masses, especially during catastrophic events, as the gravitational collapse of massive stars.
- gray manganese ore — manganite.
- great expectations — a novel (1861) by Charles Dickens.
- great pastern bone — the part of the foot of a horse, cow, etc., between the fetlock and the hoof.
- greater roadrunner — either of two large terrestrial cuckoos of the genus Geococcyx of arid regions of the western U.S., Mexico, and Central America, especially G. californianus (greater roadrunner)
- green-backed heron — a small, American heron, Butorides striatus, having glossy green wings.
- greenhouse warming — the increase in the mean temperature of the earth attributed to the greenhouse effect
- gregorian calendar — the reformed Julian calendar now in use, according to which the ordinary year consists of 365 days, and a leap year of 366 days occurs in every year whose number is exactly divisible by 4 except centenary years whose numbers are not exactly divisible by 400, as 1700, 1800, and 1900.
- grosse pointe park — a city in SE Michigan, near Detroit.
- growing degree-day — a degree-day above 41°F (5°C), used in relation to plant growth.
- guidance counselor — advisor in schools
- gulf of california — an arm of the Pacific Ocean, between Sonora and Lower California
- gyromagnetic ratio — the ratio of the magnetic moment of a rotating charged particle to its angular momentum.
- ha ha only serious — (SF fandom, originally as mutation of HHOK, "Ha Ha Only Kidding") A phrase (often seen abbreviated as HHOS) that aptly captures the flavour of much hacker discourse. Applied especially to parodies, absurdities, and ironic jokes that are both intended and perceived to contain a possibly disquieting amount of truth, or truths that are constructed on in-joke and self-parody. The Jargon File contains many examples of ha-ha-only-serious in both form and content. Indeed, the entirety of hacker culture is often perceived as ha-ha-only-serious by hackers themselves; to take it either too lightly or too seriously marks a person as an outsider, a wannabee, or in larval stage. For further enlightenment on this subject, consult any Zen master. See also AI koan.
- half-open interval — a set of numbers between two given numbers but including only one endpoint.
- hamilton's problem — Hamiltonian problem
- harnessed antelope — any African antelope of the genus Tragelaphus, especially the bushbuck, having the body marked with white stripes and spots that resemble a harness, and, in the male, long, gently spiraling horns.
- hash house slinger — a person who serves in a cheap cafe
- haulage contractor — a person or firm that transports goods by lorry
- have eyes only for — the organ of sight, in vertebrates typically one of a pair of spherical bodies contained in an orbit of the skull and in humans appearing externally as a dense, white, curved membrane, or sclera, surrounding a circular, colored portion, or iris, that is covered by a clear, curved membrane, or cornea, and in the center of which is an opening, or pupil, through which light passes to the retina.
- have money to burn — to have more money than one needs, so that some can be spent foolishly