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19-letter words containing l, e, t, d, r

  • object-oriented sql — (language)   (OSQL) A functional language, a superset of SQL, used in Hewlett-Packard's OpenODB database system.
  • old english pattern — a spoon pattern having a stem curving backward at the end.
  • olive-backed thrush — Swainson's thrush.
  • on the threshold of — If you are on the threshold of something exciting or new, you are about to experience it.
  • on top of the world — the highest or loftiest point or part of anything; apex; summit. Synonyms: zenith, acme, peak, pinnacle, vertex. Antonyms: bottom, base, foot, lowest point.
  • optical double star — two stars that appear as one if not viewed through a telescope with adequate magnification, such as two stars that are separated by a great distance but are nearly in line with each other and an observer (optical double star) or those that are relatively close together and comprise a single physical system (physical double star)
  • optical mark reader — (hardware)   (OMR) A special scanning device that can read carefully placed pencil marks on specially designed documents. OMR is frequenty used in forms, questionnaires, and answer-sheets.
  • parliament building — structure housing legislative offices
  • particle dispersoid — A particle dispersoid is a suspension of solid particles in a gas.
  • patrol torpedo boat — PT boat.
  • peridental membrane — periodontal membrane.
  • periodontal disease — any of various mixed bacterial infections that affect the soft tissues and bones supporting the teeth.
  • peritoneal dialysis — a form of dialysis in which the peritoneum is used as an autogenous semipermeable membrane
  • perpetual adoration — uninterrupted adoration of the Blessed Sacrament.
  • perpetual debenture — a bond or debenture that can either never be redeemed or cannot be redeemed on demand
  • phenylthiocarbamide — a crystalline, slightly water-soluble solid, C 6 H 5 NHCSNH 2 , that is either tasteless or bitter, depending upon the heredity of the taster, and is used in medical genetics and as a diagnostic.
  • pileated woodpecker — a large, black-and-white American woodpecker, Dryocopus pileatus, having a prominent red crest.
  • plastic deformation — In plastic deformation a material changes shape when a stress is applied to it and does not go back to its original state when the stress is removed.
  • police headquarters — building where police are stationed
  • post-and-rail fence — a fence constructed of upright wooden posts with horizontal timber slotted through it
  • post-polio syndrome — Pathology. muscle weakness occurring several decades after recovery from a polio infection, caused by fatiguing of collateral nerve axons developed during physical rehabilitation.
  • pre-order traversal — traversal
  • preproduction model — a prototype of a product before the product goes into full-scale production
  • preproduction trial — a trial to test a prototype of a product before the product goes into full-scale production
  • priority scheduling — (operating system)   Processes scheduling in which the scheduler selects tasks to run based on their priority as opposed to, say, a simple round-robin. Priorities may be static or dynamic. Static priorities are assigned at the time of creation, while dynamic priorities are based on the processes' behaviour while in the system. For example, the scheduler may favour I/O-intensive tasks so that expensive requests can be issued as early as possible. A danger of priority scheduling is starvation, in which processes with lower priorities are not given the opportunity to run. In order to avoid starvation, in preemptive scheduling, the priority of a process is gradually reduced while it is running. Eventually, the priority of the running process will no longer be the highest, and the next process will start running. This method is called aging.
  • pseudo-experimental — pertaining to, derived from, or founded on experiment: an experimental science.
  • radiation potential — the potential in volts that must be applied to an atom or molecule to cause it to emit radiation at one of its characteristic frequencies.
  • radioactive fallout — the settling to the ground of airborne particles ejected into the atmosphere from the earth by explosions, eruptions, forest fires, etc., especially such settling from nuclear explosions (radioactive fallout) Compare rainout.
  • radiopharmaceutical — any of a number of radioactive drugs used diagnostically or therapeutically.
  • redress the balance — to make a fair adjustment; see that justice is done
  • reduction potential — (in a galvanic cell) the potential of the electrode at which reduction occurs.
  • reference electrode — an electrode of known oxidation potential used in determining the electromotive force of a galvanic cell.
  • registered disabled — on a local authority register under the Chronically Sick and Disabled Persons Act 1970
  • reindustrialization — the revitalization of an industry or industrial society through government aid and tax incentives, modernization of factories and machinery, etc.
  • relational database — an electronic database comprising multiple files of related information, usually stored in tables of rows (records) and columns (fields), and allowing a link to be established between separate files that have a matching field, as a column of invoice numbers, so that the two files can be queried simultaneously by the user.
  • relative impediment — a fact or circumstance that disqualifies from lawful marriage persons who are closely related.
  • religious education — religion as school subject
  • removable cartridge — a hard disk enclosed in a case that can be removed from the disk drive, having more storage than floppy disks.
  • resplendent quetzal — See under quetzal (def 1).
  • reticulated tracery — tracery consisting in large part of a netlike arrangement of repeated geometrical figures.
  • reticuloendothelial — pertaining to, resembling, or involving cells of the reticuloendothelial system.
  • rickettsial disease — any of several acute infectious diseases caused by ticks, mites, or body lice infected with rickettsiae. The main types include typhus, spotted fever, Q fever, trench fever, and tsutsugamushi disease
  • right-eyed flounder — any of several flatfishes of the family Pleuronectidae, having both eyes on the right side of the head.
  • romanian tenderloin — a cut of beef consisting of the diaphragm muscle.
  • royal correspondent — a journalist who reports on matters relating to royalty
  • run-length encoding — A kind of compression algorithm which replaces sequences ("runs") of consecutive repeated characters (or other units of data) with a single character and the length of the run. This can either be applied to all input characters, including runs of length one, or a special character can be used to introduce a run-length encoded group. The longer and more frequent the runs are, the greater the compression that will be achieved. This technique is particularly useful for encoding black and white images where the data units would be single bit pixels.
  • saddle-billed stork — a large stork, Ephippiorhynchus senegalensis, of West Africa, having a white and black body and a long, red and black bill.
  • santiago del estero — a city in N Argentina.
  • screen actors guild — a labor union for motion-picture performers, founded in 1933. Abbreviation: SAG.
  • secondary qualities — one of the qualities attributed by the mind to an object perceived, such as color, temperature, or taste.
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