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21-letter words containing a, g, r, i

  • differential geometry — the branch of mathematics that deals with the application of the principles of differential and integral calculus to the study of curves and surfaces.
  • differential topology — the branch of topology that studies the properties of differentiable manifolds that remain invariant under diffeomorphisms.
  • direct inward dialing — (communications)   (DID) A service offered by telephone companies which allows the last 3 or 4 digits of a phone number to be transmitted to the destination exchange. For example, a company could have 10 incoming lines, all with the number 234 000. If a caller dials 234 697, the call is sent to 234 000 (the company's exchange), and the digits 697 are transmitted. The company's exchange then routes the call to extension 697. This gives the impression of 1000 direct dial lines, whereas in fact there are only 10. Obviously, only 10 at a time can be used. This system is also used by fax servers. Instead of an exchange at the end of the 234 000 line, a computer running fax server software and fax modem cards uses the last three digits to identify the recipient of the fax. This allows 1000 people to have their own individual fax numbers, even though there is only one 'fax machine'.
  • disassortative mating — the reproductive pairing of individuals that have traits more dissimilar than would likely be the case if mating were random (contrasted with assortative mating).
  • disk operating system — DOS.
  • distant early warning — a US radar detection system to warn of missile attack
  • dumfries and galloway — a region in S Scotland. 2460 sq. mi. (6371 sq. km).
  • earthmoving equipment — machines, such as bulldozers, that are used for excavating and moving large quantities of earth
  • eastern daylight time — a time zone applicable to many eastern areas of the United States during the summer months, being a daylight-saving variant of Eastern Standard Time
  • electromagnetic field — a field of force associated with a moving electric charge equivalent to an electric field and a magnetic field at right angles to each other and to the direction of propagation
  • electromagnetic pulse — a surge of electromagnetic radiation, esp one resulting from a nuclear explosion, which can disrupt electronic devices and, occasionally, larger structures and equipment
  • electromyographically — By means of, or in terms of, electromyography.
  • empire state building — New York City skyscraper
  • equiangular hyperbola — a hyperbola with transverse and conjugate axes equal to each other.
  • every dog has his day — one's luck will come
  • faculty board meeting — a meeting of the governing body of a faculty
  • first-dollar coverage — insurance that provides payment for the full loss up to the insured amount with no deductibles.
  • first-round financing — First round financing is the first time a new company raises money from investors.
  • foreign exchange rate — the rate that specifies how much the currency of a nation is worth in terms of the currency of another nation
  • forensic anthropology — the branch of physical anthropology in which anthropological data, criteria, and techniques are used to determine the sex, age, genetic population, or parentage of skeletal or biological materials in questions of civil or criminal law.
  • fragmentation grenade — a grenade with a heavy metal casing that shatters, on exploding, into fragments that travel at high speed and with great force.
  • framing specification — A specification of the "protocol bits" that surround the "data bits" on a communications channel to allow the data to be "framed" into chunks, like start and stop bits in EIA-232. It allows a receiver to synchronize at points along the data stream.
  • franco-belgian system — French system.
  • free alongside vessel — (of a shipment of goods) delivered to the dock without charge to the buyer, but excluding the cost of loading onto the vessel
  • free-floating anxiety — chronic anxiety occurring for no identifiable cause
  • friuli-venezia giulia — a region in NE Italy: formerly part of Venezia Giulia, most of which was ceded to Yugoslavia (now Croatia and Slovenia) in 1947. 2947 sq. mi. (7630 sq. km).
  • fuming sulphuric acid — a mixture of pyrosulphuric acid, H2S2O7, and other condensed acids, made by dissolving sulphur trioxide in concentrated sulphuric acid
  • garbageabetical order — (humour)   1. The result of using an insertion sort to merge data into an unsorted list. 2. The state of any file or list that is supposed to be sorted, but is not.
  • gas analysis recorder — A gas analysis recorder is a device which samples, records, and analyses gas.
  • gastrohepatic omentum — lesser omentum.
  • gaussian distribution — normal distribution
  • gender disappointment — a feeling of depression or anxiety experienced by an expectant parent when the gender of the baby does not match his or her preference
  • general court-martial — a court-martial having the authority to try any offense against military law and to impose a sentence of dishonorable discharge or of death when provided by law.
  • general of the armies — a special rank held by John J. Pershing, equivalent to general of the army.
  • generic type variable — (programming)   (Also known as a "schematic type variable"). Different occurrences of a generic type variable in a type expression may be instantiated to different types. Thus, in the expression let id x = x in (id True, id 1) id's type is (for all a: a -> a). The universal quantifier "for all a:" means that a is a generic type variable. For the two uses of id, a is instantiated to Bool and Int. Compare this with let id x = x in let f g = (g True, g 1) in f id This looks similar but f has no legal Hindley-Milner type. If we say f :: (a -> b) -> (b, b) this would permit g's type to be any instance of (a -> b) rather than requiring it to be at least as general as (a -> b). Furthermore, it constrains both instances of g to have the same result type whereas they do not. The type variables a and b in the above are implicitly quantified at the top level: f :: for all a: for all b: (a -> b) -> (b, b) so instantiating them (removing the quantifiers) can only be done once, at the top level. To correctly describe the type of f requires that they be locally quantified: f :: ((for all a: a) -> (for all b: b)) -> (c, d) which means that each time g is applied, a and b may be instantiated differently. f's actual argument must have a type at least as general as ((for all a: a) -> (for all b: b)), and may not be some less general instance of this type. Type variables c and d are still implicitly quantified at the top level and, now that g's result type is a generic type variable, any types chosen for c and d are guaranteed to be instances of it. This type for f does not express the fact that b only needs to be at least as general as the types c and d. For example, if c and d were both Bool then any function of type (for all a: a -> Bool) would be a suitable argument to f but it would not match the above type for f.
  • get in someone's hair — any of the numerous fine, usually cylindrical, keratinous filaments growing from the skin of humans and animals; a pilus.
  • gideons international — an interdenominational lay society organized in 1899 to place Bibles in hotel rooms.
  • giovanni da verrazano — Giovanni da [jaw-vahn-nee dah] /dʒɔˈvɑn ni dɑ/ (Show IPA), c1480–1527? Italian navigator and explorer.
  • give a horse its head — to allow a horse to gallop by lengthening the reins
  • give sb a green light — If someone in authority gives you a green light, they give you permission to do something.
  • give sb the runaround — If someone gives you the runaround, they deliberately do not give you all the information or help that you want, and send you to another person or place to get it.
  • glacier national park — a national park in NW Montana: glaciers; lakes; forest reserve. 1534 sq. mi. (3970 sq. km).
  • glen of imaal terrier — a strongly-built medium-sized variety of terrier with a medium-length coat and short forelegs
  • glyceryl tripalmitate — palmitin.
  • go (in) to bat for sb — If you go to bat for someone or go in to bat for them, you give them your support.
  • gold bullion standard — a gold standard in which gold is not coined but may be purchased at a fixed price for foreign exchange.
  • government in waiting — a political group which is hoping to be elected to govern in the near future
  • gram-molecular weight — gram molecule. Abbreviation: GMW.
  • grammatical inference — Deducing a grammar from given examples. Also known as "inductive inference" and recently as "computational learning".
  • great smoky mountains — the W part of the Appalachians, in W North Carolina and E Tennessee. Highest peak: Clingman's Dome, 2024 m (6642 ft)
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