20-letter words containing p, t, e, r, o
- definite description — a description that is modified by the definite article or a possessive, such as the woman in white or Rosemary's baby
- demographic timebomb — a predicted shortage of school-leavers and consequently of available workers, caused by an earlier drop in the birth rate, resulting in an older workforce
- denali national park — a national park in S central Alaska, including Denali (mountain). 3030 sq. mi. (7850 sq. km).
- department of energy — the department of the U.S. federal government that sets forth and maintains the national energy policy, including energy conservation, environmental protection, etc. Abbreviation: DOE.
- department of health — government ministry for health matters
- depreciation expense — A depreciation expense is the amount deducted from gross profit to allow for a reduction in the value of something because of its age or how much it has been used.
- descriptive geometry — the study of the projection of three-dimensional figures onto a plane surface
- descriptive notation — a method of denoting the squares on the chessboard in which each player names the files from the pieces that stand on them at the opening and numbers the ranks away from himself
- desmopressin acetate — a vasopressin analogue, C 46 H 64 N 14 O 12 S 2 , used in the treatment of diabetes insipidus.
- developing-out paper — a sensitized printing paper requiring development in order to bring out the image. Abbreviation: D.O.P.
- diabetic retinopathy — a disorder of the blood vessels of the retina occurring as a complication of poorly controlled diabetes mellitus and often leading to blindness.
- diamondback terrapin — any edible North American terrapin of the genus Malaclemys, esp M. terrapin, occurring in brackish and tidal waters and having diamond-shaped markings on the shell: family Emydidae
- diplomatic secretary — secretary (def 5).
- diplomatic-secretary — secretary (def 5).
- disproportionateness — The state or quality of being disproportionate or out of proportion.
- dolly varden pattern — a fabric print consisting of bouquets of flowers.
- double-aspect theory — a monistic theory that holds that mind and body are not distinct substances but merely different aspects of a single substance
- eastern roman empire — the eastern of the two empires created by the division of the Roman Empire in 395 ad
- ecological footprint — a mark left by the shod or unshod foot, as in earth or sand.
- education department — the department of a local authority that is concerned with education, or the government department concerned with education
- eight queens problem — eight queens puzzle
- electrocardiographic — Of or pertaining to an electrocardiogram (ECG) or electrocardiograph.
- electroencephalogram — A test or record of brain activity produced by electroencephalography.
- electromagnetic pump — a device for pumping liquid metals by placing a pipe between the poles of an electromagnet and passing a current through the liquid metal
- electronic footprint — data that identifies a computer that has connected to a particular website
- electrophysiological — Of or pertaining to electrophysiology.
- electroshock therapy — a form of shock therapy in which electric current is applied to the brain
- elephant in the room — an obvious truth deliberately ignored by all parties in a situation
- employer's liability — an employer's legal responsibility to pay damages to an employee who has been injured or who has contracted an illness because of the work he or she does
- environmental impact — the impact on the environment created by an industry, service, plan, or project
- epitaxial transistor — a transistor made by depositing a thin pure layer of semiconductor material (epitaxial layer) onto a crystalline support by epitaxy. The layer acts as one of the electrode regions, usually the collector
- equity of redemption — the right that a mortgager has in equity to redeem his property on payment of the sum owing, even though the sum is overdue
- external respiration — exchange of oxygen and carbon dioxide across external or respiratory surfaces, as gills or lungs, in multicellular organisms
- father of the chapel — (in British trade unions in the publishing and printing industries) a shop steward
- feather in one's cap — one of the horny structures forming the principal covering of birds, consisting typically of a hard, tubular portion attached to the body and tapering into a thinner, stemlike portion bearing a series of slender, barbed processes that interlock to form a flat structure on each side.
- file descriptor leak — (programming) (Or "fd leak" /F D leek/) A kind of programming bug analogous to a core leak, in which a program fails to close file descriptors ("fd"s) after file operations are completed, and thus eventually runs out of them. See leak.
- first point of aries — the vernal equinox.
- first world problems — If you say that someone has First World problems, you mean that their problems are not really very important.
- first-person shooter — a type of video game in which the player assumes the field of vision of the protagonist, so that the game camera includes the character's weapon, but the rest of the character model is not seen. Abbreviation: FPS.
- fixed action pattern — a highly stereotyped pattern of behavior that is characteristic of a particular species.
- fixed-price contract — a contract in which the price is preset and invariable, regardless of the actual costs of production.
- flat-plate collector — a type of solar collector consisting of a series of flat glass or plastic plates with black metal surfaces that absorb solar energy.
- floodlight projector — a powerful lamp having a reflector curved to produce a floodlight.
- fore-and-aft topsail — gaff topsail (def 1).
- fore-topgallant mast — the spar or section of a spar forming the topgallant portion of a foremast on a ship.
- forty-ninth parallel — an informal name for the Canadian border with the USA, which is in part delineated by the parallel line of latitude at 49°N
- freedom of the press — the right to publish newspapers, magazines, and other printed matter without governmental restriction and subject only to the laws of libel, obscenity, sedition, etc.
- freight pass-through — a special allowance or discounted price given a bookseller or bookstore by a publishing house for paying the freight charge on a shipment of books ordered: so called because the shipping charge is passed on to the consumer by an increase in the suggested retail price for each book. Abbreviation: FPT.
- frontenac et palluau — Comte de (Louis de Buade) 1620?–98, French governor of New France 1672–82, 1689–98.
- general postal union — former name of Universal Postal Union. Abbreviation: GPU.