18-letter words containing a, d, p
- a leap in the dark — an action performed without knowledge of the consequences
- abstract data type — (programming) (ADT) A kind of data abstraction where a type's internal form is hidden behind a set of access functions. Values of the type are created and inspected only by calls to the access functions. This allows the implementation of the type to be changed without requiring any changes outside the module in which it is defined. A classic example of an ADT is a stack data type for which functions might be provided to create an empty stack, to push values onto a stack and to pop values from a stack.
- accident proneness — the unconscious tendency, thought to exist in some people, to involve themselves in a large number of accidents
- acid precipitation — meteorological precipitation that is relatively acidic.
- acoustic impedance — the total reaction of a medium to the transmission of sound through it, expressed as the ratio of sound pressure to particle velocity at a given point in the medium.
- acupuncture needle — a very fine needle with a rounded tip, used in acupuncture
- adaptive answering — (communications) A feature which allows a faxmodem to answer the telephone and decide whether the incoming call is a fax or data call. Most Class 1 faxmodems do this. The U.S. Robotics Class 1 implementation however seems not to do it, it must be set to answer as either one or the other.
- adaptive radiation — evolution of a number of divergent species from a common ancestor, each species becoming adapted to occupy a different environment. This type of evolution occurred in the Tertiary manuals and the Mesozoic reptiles
- adjustable spanner — a tool with adjustable jaws used for turning bolts, etc
- administered price — a price determined by a seller's pricing policy and not by market forces, supply and demand, etc
- adobe type manager — (text, tool, product) (ATM) Software that produces PostScript outline fonts on screen and paper. There are versions that run under Microsoft Windows and on the Macintosh. ATM can do hinting, multiple master and anti-aliasing.
- adverse possession — the occupation or possession of land by a person not legally entitled to it. If continued unopposed for a period specifed by law, such occupation extinguishes the title of the rightful owner
- aerospace medicine — aviation medicine
- airspeed indicator — a dial that indicates the airspeed at which an aircraft is travelling
- alcohol dependence — alcoholism.
- almoner's cupboard — a cupboard with pierced doors, formerly used as a storage place for food.
- alpha-hydroxy acid — a type of organic acid, commonly used in skin-care preparations, that has a hydroxyl group attached to the carbon atom next to the carbon atom carrying the carboxyl group
- alpha-stannic acid — any of the series of acids usually occurring as amorphous powders and varying in composition from H 2 SnO 3 (alpha-stannic acid) to H 4 SnO 4 .
- amdahl corporation — (company) A US computer manufacturer. Amdahl is a major supplier of large mainframes, UNIX and Open Systems software and servers, data storage subsystems, data communications products, applications development software, and a variety of educational and consulting services. Amdahl products are sold in more than 30 countries for use in both open systems and IBM plug-compatible mainframe computing environments. Quarterly sales $397M, profits $13M (Aug 1994). In 1997 Amdahl became a division of Fujitsu.
- angiocardiographic — Relating to angiocardiography.
- angular dispersion — a measure of the angular separation of light rays of different wavelength or color traversing a prism or diffraction grating, equal to the rate of change of the angle of deviation with respect to the change in wavelength.
- anticipated profit — the profit that one expects to make from a deal, transaction, or project
- antimony pentoxide — a white or yellowish, water-insoluble powder, Sb 2 O 5 , used chiefly in the synthesis of antimonates.
- antiprostaglandins — Plural form of antiprostaglandin.
- apartment building — An apartment building or apartment house is a tall building which contains different apartments on different floors.
- aphrodite of melos — a Greek statue of Venus in marble, c200 b.c., found in 1820 on Melos and now in the Louvre, Paris.
- apostolic delegate — a representative of the pope sent to countries that do not have full or regular diplomatic relations with the Holy See
- apparent magnitude — magnitude (sense 3)
- apparent solar day — the period of time between two successive passages of the sun's center across the same meridian.
- appellate division — the section of a court that hears appeals, sometimes existing as an intermediate court between a trial court and a court of last resort.
- applied kinematics — kinematics (def 2).
- applied psychology — psychology that is put to practical use
- appraisal drilling — (in the oil industry) drilling carried out once oil or gas has been discovered in order to assess the extent of the field, the reserves, the possible rate of production, and the properties of the oil or gas
- associated company — a company which is largely controlled by its parent company because the latter owns anything up to 50% of the shares
- asymptotic freedom — a property of the force between quarks, according to quantum chromodynamics, such that they behave almost like free particles when they are close together within a hadron.
- atmospheric window — wavelengths of the electromagnetic spectrum that can be transmitted through the earth's atmosphere. Atmospheric windows occur in the visible, infrared, and radio regions of the spectrum
- auditory phonetics — the branch of phonetics concerned with the perception of speech sounds by humans
- authorized capital — the total amount of value of the shares that a company is allowed to distribute
- avoirdupois weight — a British and American system of weights based on a pound of 16 ounces
- balanced computing — (jargon) Matching computer tools to job activities so that the computer system structure parallels the organisation structure and work functions. Both personal computers and employees operate in a decentralised environment with monitoring of achievement of management objectives from centralised corporate systems.
- ballistic pendulum — a device consisting of a large mass hung from a horizontal bar by two rods, used to measure the velocity of an object, as a bullet, by retaining the object upon impact, its velocity being a function of the displacement of the mass.
- band-tailed pigeon — a wild pigeon, Columba fasciata, of western North America, having a gray band on its tail.
- be in good company — If you say that someone is in good company, you mean that they should not be ashamed of a mistake or opinion, because some important or respected people have made the same mistake or have the same opinion.
- biomedical package — (language, library, statistics) (BMDP) A statistical language and library of over forty statistical routines developed in 1961 at UCLA, Health Sciences Computing Facility under Dr. Wilford Dixon. BMDP was first implemented in Fortran for the IBM 7090. Tapes of the original source were distributed for free all over the world. BMDP is the second iteration of the original BIMED programs. It was developed at UCLA Health Sciences Computing facility, with NIH funding. The "P" in BMDP originally stood for "parameter" but was later changed to "package". BMDP used keyword parameters to defined what was to be done rather than the fixed card format used by original BIMED programs. BMDP supports many statistical funtions: simple data description, survival analysis, ANOVA, multivariate analyses, regression analysis, and time series analysis. BMDP Professional combines the full suite of BMDP Classic (Dynamic) release 7.0 with the BMDP New System 2.0 Windows front-end.
- bomb disposal unit — a unit of the police or armed services specializing in bomb disposal
- borax pentahydrate — a white, crystalline, water-soluble solid, Na 2 B 4 O 7 ⋅5H 2 O, used chiefly for killing weeds, as a water softener, and as a disinfectant and deodorizing agent.
- brand-name product — A brand-name product is one which is made by a well-known manufacturer and has the manufacturer's label on it.
- broad-leaved maple — a maple, Acer macrophyllum, of western North America, characterized by dark green, thickened leaves that may reach 12 inches (30 cm) or more in width.
- camp david accords — a peace treaty between Israel and Egypt issuing from talks at Camp David between Egyptian President Sadat, Israeli Prime Minister Begin, and the host, U.S. President Carter: signed in 1979.
- cape breton island — an island off SE Canada, in NE Nova Scotia, separated from the mainland by the Strait of Canso: its easternmost point is Cape Breton. Pop: 132 298 (2006). Area: 10 280 sq km (3970 sq miles)
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