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18-letter words containing a, p, i, e

  • definitive plumage — the plumage of a bird that, once attained, does not change significantly in color or pattern for the rest of the bird's life.
  • 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.
  • desalination plant — a factory where salt is removed from salt water in order to make the water suitable for drinking and irrigation
  • 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
  • diabetes insipidus — a disorder of the pituitary gland causing excessive thirst and excretion of large quantities of dilute urine
  • dialytic telescope — a type of achromatic telescope with a second correcting lens
  • didaskaleinophobia — The fear of going to school.
  • dietary supplement — a substance taken in addition to what you eat in order to promote health
  • digital audio tape — a cassette containing magnetic tape used for high-fidelity digital recording or playback of audio. Abbreviation: DAT.
  • 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
  • diplomatic shuttle — a series of diplomatic visits to other states made by an official, such as an ambassador or envoy
  • disability pension — a pension paid to people who are unable to continue to work because of a disability
  • 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.
  • disodium phosphate — sodium phosphate (def 2).
  • dispatch documents — documents sent with a parcel, etc, detailing information such as contents, delivery address, etc
  • 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.
  • domestic appliance — a machine used for household tasks, for example, a washing machine, refrigerator, etc.
  • 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.
  • dynamically scoped — dynamic scope
  • 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.
  • east india company — the company chartered by the English government in 1600 to carry on trade in the East Indies: dissolved in 1874.
  • 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.
  • epicycloidal wheel — one of the planetary gears of an epicyclic train
  • 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
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