21-letter words containing d, w, i
- a world heritage site — a site of international importance
- a world of difference — If you say that there is a world of difference between one thing and another, you are emphasizing that they are very different from each other.
- aerodynamic wave drag — the restraining force on a supersonic aircraft caused by shock waves.
- as dull as ditchwater — extremely uninspiring
- as luck would have it — fortunately
- be in black and white — You say that something is in black and white when it has been written or printed, and not just said.
- black-headed fireworm — the larva of any of several moths, as Rhopobota naevana (black-headed fireworm) which feeds on the leaves of cranberries and causes them to wither.
- blackburn with darwen — a unitary authority in NW England, in Lancashire. Pop: 139 800 (2003 est). Area: 137 sq km (53 sq miles)
- broadleaved whitebeam — a whitebeam, Sorbus latifolia, widely found in France and England, also planted as an ornamental
- cheese and wine party — a party at which cheese and wine are served
- chickweed wintergreen — a primulaceous plant, Trientalis europaea, of N Europe and N Asia, having white flowers and leaves arranged in a whorl
- civilian review board — a quasi-judicial board of appointed or elected citizens that investigates complaints against the police.
- collimator viewfinder — a type of viewfinder in a camera
- dataflow architecture — a means of arranging computer data processing in which operations are governed by the data present and the processing it requires rather than by a prewritten program that awaits data to be processed
- devil's walking-stick — Hercules'-club (sense 1)
- devil's-walking-stick — Hercules-club (def 2).
- dew-point temperature — the temperature to which air must be cooled, at a given pressure and water-vapor content, for it to reach saturation; the temperature at which dew begins to form.
- differential windlass — a pair of hoisting drums of different diameter turning at the same rate, such that a pulley suspended below them on a line wound on the larger drum and unwound from the smaller drum is raised with mechanical advantage.
- 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'.
- 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).
- dusky seaside sparrow — a species of sparrow, Ammospiza maritima, existing in two subspecies, one (Cape Sable seaside sparrow) having dark olive-drab plumage with a lighter breast and underbelly, and the other (dusky seaside sparrow) having bold black and white markings on the breast and underbelly: the dusky seaside sparrow is almost extinct.
- dwarf japanese quince — a low, shrubby, Japanese flowering quince, Chaenomeles japonica, of the rose family, having salmon-to-orange flowers and yellow fruit.
- financial underwriter — A financial underwriter is an insurance employee working in financial underwriting.
- forward compatibility — (jargon) The ability to accept input from later versions of itself. Forward compatibility is harder to achieve than backward compatibility, since, in the backward case, the input format is know whereas a forward compatible system needs to cope gracefully with unknown future features. An example of future compatibility is the stipulation that a web browser should ignore HTML tags it does not recognise. See also extensible.
- frederick william iii — 1770–1840, king of Prussia 1797–1840.
- french and indian war — the war in America in which France and its Indian allies opposed England 1754–60: ended by Treaty of Paris in 1763.
- friends with benefits — friends who have a casual sexual relationship with no expectation of commitment
- get down on something — to procure something, esp in advance of needs or in anticipation of someone else
- get in under the wire — to accomplish something with little time to spare
- go down like ninepins — (of each of a group of people) to become ill very easily and quickly
- hazard warning device — an appliance fitted to a motor vehicle that operates the hazard lights
- i don't know how/what — You use I don't know in expressions which indicate criticism of someone's behaviour. For example, if you say that you do not know how someone can do something, you mean that you cannot understand or accept them doing it.
- illinois bundleflower — a warm-season perennial, Desmanthus illinoensis, having small brown legumes and fernlike leaves, native to North American prairies, glades, and pastures.
- in co-ordination with — If you do something in co-ordination with someone else, you both organize your activities so that you work together efficiently.
- indicated horse-power — the horsepower of a reciprocating engine as shown by an indicator record. Abbreviation: ihp, IHP.
- insurance underwriter — sb who assesses eligibility for insurance policies
- jewish defense league — an organization of militant Jewish activists, founded in 1968 in the U.S. to combat anti-Semitism and defend Jewish interests worldwide. Abbr.: JDL.
- keep one's voice down — If someone tells you to keep your voice down, they are asking you to speak more quietly.
- knowledge engineering — the practical application of developments in the field of computer science concerned with artificial intelligence.
- lady windermere's fan — a comedy (1892) by Oscar Wilde.
- law of thermodynamics — any of three principles variously stated in equivalent forms, being the principle that the change of energy of a thermodynamic system is equal to the heat transferred minus the work done (first law of thermodynamics) the principle that no cyclic process is possible in which heat is absorbed from a reservoir at a single temperature and converted completely into mechanical work (second law of thermodynamics) and the principle that it is impossible to reduce the temperature of a system to absolute zero in a finite number of operations (third law of thermodynamics)
- lost in the underflow — (jargon) Too small to be worth considering; more specifically, small beyond the limits of accuracy or measurement. This is a reference to "floating point underflow". The Hacker's Jargon File claimed that it is also a pun on "undertow" (a kind of fast, cold current that sometimes runs just offshore and can be dangerous to swimmers). "Well, sure, photon pressure from the stadium lights alters the path of a thrown baseball, but that effect gets lost in the underflow". Compare epsilon, epsilon squared; see also overflow bit.
- luck was on sb's side — If you say that luck was on someone's side, you mean that they succeeded in something by chance as well as by their own efforts or ability.
- madagascar periwinkle — a plant, Catharanthus roseus (or Vinca rosea), cultivated for its glossy foliage and pink or white flowers.
- maidenhair spleenwort — an evergreen fern, Asplenium trichomanes, abundant in woody areas of the North Temperate Zone, having thickly clustered fronds.
- medical social worker — a person who works in a hospital and is responsible for offering counselling to patients and their families and ensuring that discharged patients will receive appropriate care in the community
- medium dry white wine — Medium dry white wine is white wine that is not very sweet.
- member of the wedding — a novel (1946) and play (1950) by Carson McCullers.
- model-view-controller — (programming) (MVC) A way of partitioning the design of interactive software; a software architecture pattern. The "model" is the internal workings of the program (the data objects and algorithms), the "view" is how the user sees the state of the model and the "controller" is how the user changes the state or provides input. MVC was the original kind of what is now sometimes called an MV* pattern. Trygve Reenskaug introduced it into Smalltalk-76 while visiting Xerox PARC in the 1970s.
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