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21-letter words containing o, r, d, i, n

  • differential equation — an equation involving differentials or derivatives.
  • 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 operator — a function, usually expressed as a polynomial, that indicates linear combinations of the derivatives of the expression on which it operates.
  • differential quotient — derivative (def 6).
  • differential topology — the branch of topology that studies the properties of differentiable manifolds that remain invariant under diffeomorphisms.
  • differential-quotient — something that has been derived.
  • 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).
  • discretionary account — an account in which the stockbroker is allowed complete control over the purchase and sale of securities on the customer's behalf.
  • discriminant function — a linear function of measurements of different properties of an object or event that is used to assign the object or event to one population or another (discriminant analysis)
  • disk operating system — DOS.
  • disruptive technology — A disruptive technology is a new technology, such as computers and the Internet, which has a rapid and major effect on technologies that existed before.
  • distinctiveness ratio — the ratio of the relative frequency of some event in a given sample to that in the general population or another relevant sample
  • distribution function — (of any random variable) the function that assigns to each number the probability that the random variable takes a value less than or equal to the given number.
  • divine right of kings — the doctrine that the right of rule derives directly from God, not from the consent of the people.
  • double predestination — the doctrine that God has foreordained both those who will be saved and those who will be damned.
  • double spanish burton — a tackle having one standing block and two running blocks, giving a mechanical advantage of five, neglecting friction.
  • drop in someone's lap — give someone the responsibility of
  • drop the handkerchief — a children's game in which all the players but one stand in a circle facing inward, while that one player stealthily drops a handkerchief behind a player in the circle who must pursue and attempt to catch the one who dropped the handkerchief before the latter reaches the vacated place.
  • dumfries and galloway — a region in S Scotland. 2460 sq. mi. (6371 sq. km).
  • dynamic drive overlay — (storage, software)   (DDO) Software to allow a system BIOS that does not support Logical Block Addressing to access drives larger than 528 MB. The alternatives are to update the system BIOS or install an EIDE controller card with a suitable on-board BIOS.
  • easier said than done — difficult to do
  • eccles-jordan circuit — flip-flop
  • 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
  • endoplasmic reticulum — an extensive intracellular membrane system whose functions include synthesis and transport of lipids and, in regions where ribosomes are attached, of proteins
  • enhanced oil recovery — any of several techniques that make it possible to recover more oil than can be obtained by natural pressure, such as the injection of fluid or gases into an oilfield to force more oil to the surface
  • enharmonic modulation — a change of key achieved by regarding a note in one key as an equivalent note in another. Thus E flat in the key of A flat could be regarded as D sharp in the key of B major
  • environmental studies — a university course studying the environment and related issues
  • extensible vax editor — (text, tool)   (EVE) A DEC product implemented using DEC's Text Processing Utility (TPU).
  • faculty board meeting — a meeting of the governing body of a faculty
  • first-round financing — First round financing is the first time a new company raises money from investors.
  • flip someone the bird — give someone the finger (see phrase under finger)
  • food conversion ratio — a ratio expressing the weight of food required to produce a unit gain in the live weight of an animal
  • foreground processing — a type of processing that supports interaction between interactive and batch operations
  • foreign correspondent — a correspondent, as for a periodical, assigned to send back articles and news dispatches from a foreign country for publication.
  • fragmentation grenade — a grenade with a heavy metal casing that shatters, on exploding, into fragments that travel at high speed and with great force.
  • fraudulent conversion — conversion committed with the intent to defraud
  • 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
  • freedom of expression — the unrestrained right to voice ideas, opinions, etc
  • french fried potatoes — a more formal name for chips
  • gas analysis recorder — A gas analysis recorder is a device which samples, records, and analyses gas.
  • 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
  • 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.
  • gird (up) one's loins — to get ready to do something difficult or strenuous
  • 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.
  • give someone the bird — to tell someone rudely to depart; scoff at; hiss
  • gold bullion standard — a gold standard in which gold is not coined but may be purchased at a fixed price for foreign exchange.
  • green river ordinance — a local ordinance banning door-to-door selling.
  • ground-effect machine — ACV (def 2).
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