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21-letter words containing a, p, r

  • dead from the neck up — stupid or unintelligent
  • decompression chamber — a chamber in which the pressure of air can be varied slowly for returning people from abnormal pressures to atmospheric pressure without inducing decompression sickness
  • deep scattering layer — any of the stratified zones in the ocean which reflect sound during echo sounding, usually composed of marine organisms which migrate vertically from c. 250 to 800 m (c. 820 to 2,625 ft)
  • department of defense — the department of the U.S. federal government charged with ensuring that the military capacity of the U.S. is adequate to safeguard the national security. Abbreviation: DOD.
  • department of justice — the department of the U.S. federal government charged with the responsibility for the enforcement of federal laws. Abbreviation: DOJ.
  • deprovincialization's — to make provincial in character.
  • 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.
  • diapason normal pitch — a standard of pitch in which A above middle C is established at 435 vibrations per second.
  • differential operator — a function, usually expressed as a polynomial, that indicates linear combinations of the derivatives of the expression on which it operates.
  • differential topology — the branch of topology that studies the properties of differentiable manifolds that remain invariant under diffeomorphisms.
  • disk operating system — DOS.
  • display advertisement — an advertisement designed to attract attention by using devices such as conspicuous or elegant typefaces, graphics, etc
  • 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.
  • 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.
  • earthmoving equipment — machines, such as bulldozers, that are used for excavating and moving large quantities of earth
  • eastern european time — a standard time used by some countries in Eastern Europe, such as Finland, Romania, etc and also some countries of the Middle East and North Africa
  • electric displacement — the electric flux density when an electric field exists in free space into which a dielectric is introduced
  • electric polarization — Electric polarization is the type of polarization of electricity that occurs in a dielectric.
  • electrochromatography — chromatography effected by the influence of an applied electric field
  • electroencephalograms — Plural form of electroencephalogram.
  • electroencephalograph — A machine used for electroencephalography.
  • 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.
  • electronystagmography — A diagnostic test to record involuntary movements of the eye caused by a condition known as nystagmus. It can also be used to diagnose the cause of vertigo, dizziness or balance dysfunction by testing the vestibular system.
  • empire state building — New York City skyscraper
  • empirical probability — a measure or estimate of the degree of confidence one may have in the occurrence of an event, defined as the proportion observed in a sample
  • endoplasmic reticulum — an extensive intracellular membrane system whose functions include synthesis and transport of lipids and, in regions where ribosomes are attached, of proteins
  • epidermolysis bullosa — type of genetic skin disorder
  • equiangular hyperbola — a hyperbola with transverse and conjugate axes equal to each other.
  • ethernet private line — (networking)   (EPL) A data service defined by the Metro Ethernet Forum, providing a point-to-point Ethernet connection between a pair of dedicated User-Network Interfaces (UNIs), with a high degree of transparency.
  • euro-commercial paper — commercial paper issued in a eurocurrency
  • european central bank — the central bank of the European Union, established in 1998 to oversee the process of European Monetary Union and subsequently to direct monetary policy within the countries using the euro
  • european space agency — an organization dedicated to space exploration with 18 European countries as members
  • exposure compensation — the act of overriding a camera's automatic exposure in order to achieve a particular effect or due to difficult lighting conditions
  • flotation compartment — in a boat, an enclosed section filled with air or gas to give buoyancy
  • fluorophosphoric acid — any of three acids containing fluorine and phosphorus, HPF 6 , HPO 2 F 2 , or H 2 PO 3 F.
  • 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.
  • 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.
  • 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.
  • french fried potatoes — a more formal name for chips
  • frequent wash shampoo — a shampoo whose mildness allows it to be used frequently
  • fuming sulphuric acid — a mixture of pyrosulphuric acid, H2S2O7, and other condensed acids, made by dissolving sulphur trioxide in concentrated sulphuric acid
  • functional imperative — a requirement for the survival of any social system, as communication, control of conflict, or socialization.
  • gastrohepatic omentum — lesser omentum.
  • 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
  • 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.
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