18-letter words containing a, d, p, t, e, r
- 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.
- 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
- electrocardiograph — A machine used for electrocardiography.
- flat address space — (architecture) The memory architecture in which any memory location can be selected from a single contiguous block by a single integer offset. Almost all popular processors have a flat address space, but the Intel x86 family has a segmented address space. A flat address space greatly simplifies programming because of the simple correspondence between addresses (pointers) and integers.
- fore-edge painting — a technique of painting a picture on the fore edge of a book, often in such a manner that only when the pages are slightly fanned the picture is revealed.
- forward compatible — forward compatibility
- fulminating powder — powder that explodes by percussion.
- funding operations — the conversion of government floating stock or short-term debt into holdings of long-term bonds
- get the upper hand — gain advantage
- grand penitentiary — See under penitentiary (def 3).
- harnessed antelope — any African antelope of the genus Tragelaphus, especially the bushbuck, having the body marked with white stripes and spots that resemble a harness, and, in the male, long, gently spiraling horns.
- hermaphrodite brig — a two-masted sailing vessel, square-rigged on the foremast and fore-and-aft-rigged on the mainmast.
- hexaphosphorylated — (biochemistry) phosphorylated with six units of phosphoric acid.
- hydroxynaphthalene — naphthol.
- hydroxytryptamines — Plural form of hydroxytryptamine.
- hyperaldosteronism — aldosteronism.
- hypophosphorylated — (biochemistry) phosphorylated to a less than normal extent, or less than fully.
- industrial dispute — disagreement between workers and managers
- interdependability — capable of being depended on; worthy of trust; reliable: a dependable employee.
- justice department — the United States federal department for enforcing federal laws
- methylated spirits — ethyl alcohol denatured with methyl alcohol for the purpose of preventing its use as an alcoholic beverage.
- midstream operator — A midstream operator is a company that gathers, transports, and processes natural gas or oil.
- monophosphorylated — (biochemistry) phosphorylated with a single unit of phosphoric acid.
- morphine addiction — the fact or condition of being addicted to morphine
- motor torpedo boat — PT boat.
- neurodevelopmental — Of or pertaining to the development of neurological pathways in the brain.
- normally aspirated — A normally aspirated or naturally aspirated engine breathes air at atmospheric pressure.
- operation overlord — the codename for the Allied invasion (June 1944) of northern France
- optical disc drive — optical disk drive
- optical disk drive — (hardware) (Or "optical disc drive", "optical storage") A generic term for any device that reads and/or writes optical media, i.e. compact discs, DVDs and/or Blu-ray discs or future media that uses light (from a small laser) to read data off a removable, rotating disk. At least one such drive is commonly installed in most personal computers to allow them to play and/or record audio and video media and load and store data such as program installers. The floppy disk has been replaced by optical media due to its vastly greater capacity, e.g. 50,000 megabytes for a dual-layer blu-ray disc compared with 1.5 megabytes for a floppy (over 30,000 times as much).
- overhead projector — over one's head; aloft; up in the air or sky, especially near the zenith: There was a cloud overhead.
- paediatric nursing — the branch of nursing concerned with the care of children
- paint the town red — a substance composed of solid coloring matter suspended in a liquid medium and applied as a protective or decorative coating to various surfaces, or to canvas or other materials in producing a work of art.
- parallel reduction — A form of applicative order reduction in which all redexes in an expression are reduced simultaneously. Variants include parallel outermost reduction and lenient reduction. See normal order reduction.
- paraurethral gland — any of a group of vestigial glands located in the posterior wall of the urethra in women.