19-letter words containing o, l, d, a
- particle dispersoid — A particle dispersoid is a suspension of solid particles in a gas.
- patrol torpedo boat — PT boat.
- 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
- peroxysulfuric acid — persulfuric acid (def 1).
- perpetual adoration — uninterrupted adoration of the Blessed Sacrament.
- 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.
- pistol-handle knife — a table knife, especially of the 18th century, having a slightly curved handle resembling the grip of a flintlock pistol.
- 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.
- play fast and loose — a dramatic composition or piece; drama.
- pleased to meet you — greeting
- police headquarters — building where police are stationed
- polycarboxylic acid — a type of carboxylic acid containing two or more carboxyl groups
- polyclonal antibody — a mixture of antibodies of different specificities, as in the serum of a person immunized to various antigens.
- polyphosphoric acid — any one of a series of oxyacids of phosphorus with the general formula Hn+2PnO3n+1. The first member is pyrophosphoric acid (n = 2) and the series includes the highly polymeric metaphosphoric acid. The higher acids exist in an equilibrium mixture
- post-and-rail fence — a fence constructed of upright wooden posts with horizontal timber slotted through it
- pre-order traversal — traversal
- preproduction trial — a trial to test a prototype of a product before the product goes into full-scale production
- pride-of-california — a shrubby plant, Lathyrus splendens, of the legume family, native to southern California, having showy clusters of pale rose-pink, violet, or magenta flowers and large, smooth, beaked pods.
- procedural language — (language) Any programming language in which the programmer specifies an explicit sequences of steps to follow to produce a result (an algorithm). The term should not be confused with "imperative language" - a language that specifies explicit manipulation of state. An example (non-imperative) procedural language is LOGO, which specifies sequences of steps to perform but does not have an internal state. Other procedural languages include Basic, Pascal, C, and Modula-2. Both procedural and imperative languages are in contrast to declarative languages, in which the programmer specifies neither explicit steps nor explicit state manipulation.
- production platform — offshore power station
- professional advice — advice given by someone trained in a particular and relevant profession or job
- profitability study — a study of how much profit a company, organization, etc, makes or how profitable it is
- programmed learning — a progressively monitored, step-by-step teaching method, employing small units of information or learning material and frequent testing, whereby the student must complete or pass one stage before moving on to the next.
- pseudo-biographical — of or relating to a person's life: He's gathering biographical data for his book on Milton.
- pseudo-experimental — pertaining to, derived from, or founded on experiment: an experimental science.
- pseudo-intellectual — a person exhibiting intellectual pretensions that have no basis in sound scholarship.
- pseudo-professional — following an occupation as a means of livelihood or for gain: a professional builder.
- pseudopsychological — of or relating to psychology.
- 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.
- radiational cooling — the cooling of the earth's surface and adjacent air, primarily at night, caused by a loss of heat due to surface emission of infrared radiation.
- 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.
- rag-tag and bobtail — the riffraff; rabble: The ragtag and bobtail of every nation poured into the frontier in search of gold.
- ralph waldo emerson — Ralph Waldo [wawl-doh,, wol-] /ˈwɔl doʊ,, ˈwɒl-/ (Show IPA), 1803–82, U.S. essayist and poet.
- rancho palos verdes — a town in SW California.
- red-shouldered hawk — a North American hawk, Buteo lineatus, having rufous shoulders.
- reduction potential — (in a galvanic cell) the potential of the electrode at which reduction occurs.
- regular icosahedron — an icosahedron in which each of the faces is an equilateral triangle
- 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.
- 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.
- removable hard disk — (storage) A type of magnetic disk, or possibly magneto-optical disk which is not permanently attached to the disk drive (not a fixed disk) but which can be taken out and replaced, allowing many disks to be used in the same drive. The term "removable disk" would seem to be applicable to floppy disks but is generally reserved for hard disks in suitable cartridges such as those made by Syquest, Iomega and others. Removable disk packs were common on minicomputers such as the PDP-11 in use in the 1970s except that the drives were the size of washing machines and the disk packs as big as car wheels. Removable disks became popular on microcomputers in the 1990s as a cheap way of expanding disk space, transporting large amounts of data between computers and storing backups. Large, cheap fixed hard disks and USB memory sticks have made removable disks less attractive.
- republic of ireland — John, 1838–1918, U.S. Roman Catholic clergyman and social reformer, born in Ireland: archbishop of St. Paul, Minn., 1888–1918.
- reticuloendothelial — pertaining to, resembling, or involving cells of the reticuloendothelial system.
- romanian tenderloin — a cut of beef consisting of the diaphragm muscle.
- royal correspondent — a journalist who reports on matters relating to royalty
- saccharolactic acid — mucic acid.