18-letter words containing p, r, i, a, e
- crystal microphone — a microphone that uses a piezoelectric crystal to convert sound energy into electrical energy
- daisywheel printer — (printer) A kind of impact printer where the characters are arranged on the ends of the spokes of a wheel (resembling the petals on a daisy). The wheel (usually made of plastic) is rotated to select the character to print and then an electrically operated hammer mechanism bends the selected spoke forward slightly, sandwiching an ink ribbon between the character and the paper, as in a typewriter. One advantage of this arrangement over that of a typewriter is that different wheels may be inserted to produce different typefaces.
- deanthropomorphism — the ridding of philosophy or religion of anthropomorphic beliefs and doctrines.
- decachlorobiphenyl — (organic compound) The fully chlorinated polychlorinated biphenyl containing ten chlorine atoms.
- decompartmentalize — to remove excessive compartmentalization from (an organization)
- deep-sea fisherman — a person who takes part in deep-sea fishing
- delmarva peninsula — a peninsula of the northeast US, between Chesapeake Bay and the Atlantic
- dependent variable — a variable in a mathematical equation or statement whose value depends on that taken on by the independent variable
- depository library — a library designated by law to receive without charge all or a selection of the official publications of a government.
- depth-first search — (algorithm) A graph search algorithm which extends the current path as far as possible before backtracking to the last choice point and trying the next alternative path. Depth-first search may fail to find a solution if it enters a cycle in the graph. This can be avoided if we never extend a path to a node which it already contains. Opposite of breadth first search. See also iterative deepening.
- descriptive clause — a relative clause that describes or supplements but is not essential in establishing the identity of the antecedent and is usually set off by commas in English. In This year, which has been dry, is bad for crops the clause which has been dry is a nonrestrictive clause.
- devil's paintbrush — a perennial European hawkweed (Hieracium aurantiacum) with leafless flower stalks bearing a cluster of orange-red heads: now a common weed in N U.S. and Canada
- dietary supplement — a substance taken in addition to what you eat in order to promote health
- dimethyltryptamine — a hallucinogenic drug, C 12 H 16 N 2 , with an action of short duration. Abbreviation: DMT.
- diphosphoglycerate — an ester of phosphoric acid and glyceric acid that occurs in the blood and that promotes the release of hemoglobin-bound oxygen.
- diphtheria vaccine — a vaccine used to produce immunity against diphtheria
- diplomatic service — diplomatic corps
- discharge printing — a fabric-printing method in which the material is dyed and then certain areas are discharged so as to permit the original hue or its color replacement to act as a pattern against the colored ground.
- dispersible tablet — A dispersible tablet is a tablet that disintegrates in water or other liquid.
- disproportionately — not proportionate; out of proportion, as in size or number.
- divine inspiration — insight provided by higher power
- dna fingerprinting — the use of a DNA probe for the identification of an individual, as for the matching of genes from a forensic sample with those of a criminal suspect.
- doctype decoration — (humour) When a web author adds a doctype declaration but doesn't bother to write valid HTML.
- dominican republic — a republic in the West Indies, occupying the E part of the island of Hispaniola. 19,129 sq. mi. (49,545 sq. km). Capital: Santo Domingo.
- dot matrix printer — (hardware, printer) A kind of printer with a vertical column of up to 48 small closely packed needles or "pins" each of which can be individually forced forward to press an ink ribbon against the paper. The print head is repeatedly scanned across the page and different combinations of needles activated at each point. Dot matrix printers are noisy compared to non-impact printers.
- dot-matrix printer — device: prints using matrix dots
- drainpipe trousers — trousers with very narrow legs
- dry-powder inhaler — A dry-powder inhaler is a device that delivers medication to the lungs in the form of a dry powder.
- earnings per share — the net income of a corporation divided by the total number of shares of its common stock outstanding at a given time. Abbreviation: EPS.
- eastern hemisphere — the eastern part of the terrestrial globe, including Asia, Africa, Australia, and Europe.
- eclipsing variable — a variable star whose changes in brightness are caused by periodic eclipses of two stars in a binary system.
- economic geography — a branch of geography that deals with the relation of physical and economic conditions to the production and utilization of raw materials and their manufacture into finished products.
- eggshell porcelain — a type of very thin translucent porcelain originally made in China
- ejaculatio praecox — premature ejaculation during sexual intercourse
- electric potential — the work required to transfer a unit positive electric charge from an infinite distance to a given point against an electric field
- electrocardiograph — A machine used for electrocardiography.
- electrotherapeutic — Relating to electrotherapeutics.
- elizabeth petrovna — 1709-62; empress of Russia (1741-62): daughter of Peter I
- endangered species — animal, plant becoming extinct
- entrepreneurialism — The spirit or state of acting in an entrepreneurial manner.
- epstein-barr virus — a virus belonging to the herpes family that causes infectious mononucleosis; it is also implicated in the development of Burkitt's lymphoma and Hodgkin's disease
- equinoctial spring — either of the two highest spring tides that occur at the equinoxes
- european community — an economic and political association of European States that came into being in 1967, when the legislative and executive bodies of the European Economic Community merged with those of the European Coal and Steel Community and the European Atomic Energy Community: subsumed into the European Union in 1993
- evapotranspiration — The process by which water is transferred from the land to the atmosphere by evaporation from the soil and other surfaces and by transpiration from plants.
- examination script — a script with answers written on it by an examination candidate taking a written examination
- excess profits tax — a tax on profits exceeding a certain amount
- exercise programme — a programme detailing a range of physical exercises and the amount of time each exercise should be performed, used especially in gymnasiums, where they are typically tailored to individuals' needs
- extermination camp — a camp where people are imprisoned and killed
- false imprisonment — the unlawful restraint of a person from exercising the right to freedom of movement.
- farewell-to-spring — a slender, showy plant, Clarkia amoena, of the evening primrose family, native to western North America, having satiny, cup-shaped, lilac-crimson or reddish-pink flowers and roundish fruit.