18-letter words containing r, d, o
- gamma distribution — a continuous two-parameter distribution from which the chi-square and exponential distributions are derived, written Gamma (α. β), where α and β are greater than zero, and defined in terms of the gamma function
- garden loosestrife — any of various plants belonging to the genus Lysimachia, of the primrose family, having clusters of usually yellow flowers, as L. vulgaris (garden loosestrife) or L. quadrifolia (whorled loosestrife)
- gas-cooled reactor — a nuclear reactor using a gas as the coolant. In the Mark I type the coolant is carbon dioxide, the moderator is graphite, and the fuel is uranium cased in magnox
- gastroduodenostomy — See under gastroenterostomy.
- geodetic surveying — the surveying of the earth's surface, making allowance for its curvature and giving an accurate framework for smaller-scale surveys
- get off the ground — project: start well
- 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
- go down in history — If someone or something goes down in history, people in the future remember them because of particular actions that they have done or because of particular events that have happened.
- 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.
- 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 opportunity — perfect chance
- 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.
- government deficit — A government deficit is a situation in which a government spends more money than it has.
- 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.
- 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.
- 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.
- green-eyed monster — jealousy: Othello fell under the sway of the green-eyed monster.
- 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.
- ground rule double — a safe hit ruled for two bases according to the rules of a particular stadium, as when a fly ball bounces once in the outfield and then clears a fence.
- growing degree-day — a degree-day above 41°F (5°C), used in relation to plant growth.
- guidance counselor — advisor in schools
- 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.
- haud your wheesht! — be silent! hush!
- have words with sb — If one person has words with another, or if two or more people have words, they have a serious discussion or argument, especially because one has complained about the other's behaviour.
- head and shoulders — If you say that someone or something stands head and shoulders above other people or things, you mean that they are a lot better than them.
- hearts and flowers — maudlin sentimentality: The play is a period piece, full of innocence abused and hearts and flowers.
- hemorrhoidectomies — Plural form of hemorrhoidectomy.
- hermaphrodite brig — a two-masted sailing vessel, square-rigged on the foremast and fore-and-aft-rigged on the mainmast.
- heteroscedasticity — (statistics) The property of a series of random variables of 'not' every variable having the same finite variance.
- heteroskedasticity — Alternative spelling of heteroscedasticity.
- hexaphosphorylated — (biochemistry) phosphorylated with six units of phosphoric acid.
- higher-order macro — A means of expressing certain higher-order functions in a first order language. Proposed by Phil Wadler. Higher-order macros cannot be recursive at the top level but they may contain recursive definitions. E.g. See partial evaluation.
- hold a reservation — If a hotel holds a reservation, it keeps a room for someone, and does not give it to someone else.
- honorable ordinary — any of the ordinaries believed to be among those that are oldest or that were the source of the other ordinaries, as the chief, pale, fess, bend, chevron, cross, and saltire.
- honour moderations — (at Oxford University) the first public examination, in which candidates are placed into one of three classes of honours
- hot-water cylinder — a vertical cylindrical tank for storing hot water, esp an insulated one made of copper used in a domestic hot-water system
- hydrocinnamic acid — a white crystalline compound, C 9 H 10 O 2 , with a floral odor, used in perfumes and flavoring.
- hydroflumethiazide — A diuretic drug.
- hydrofluorocarbons — Plural form of hydrofluorocarbon.
- hydrogen electrode — a standard reference electrode with a potential of zero, used in pH measurements, consisting of a platinum-black surface covered with hydrogen bubbles.
- hydroxyacetic acid — glycolic acid.
- hydroxychloroquine — a colorless crystalline solid, C 18 H 26 ClN 3 O, used in the treatment of malaria, lupus erythematosus, and rheumatoid arthritis.
- hydroxynaphthalene — naphthol.
- hydroxytryptamines — Plural form of hydroxytryptamine.
- hyperaldosteronism — aldosteronism.
- hypermodern school — a style of chess characterized by control of the centre from the flanks