19-letter words containing o, r, e, d, s, i
- primitive methodist — a member of a Protestant denomination (Primitive Methodist Church) founded in England in 1812 and later established in the U.S., characterized by its adherence to the basic doctrines, principles, and practices taught by John Wesley.
- 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.
- proctosigmoidoscope — sigmoidoscope.
- professional advice — advice given by someone trained in a particular and relevant profession or job
- progressive judaism — Reform Judaism.
- promotions director — someone in charge of encouraging the sale of (a product) by advertising or securing financial support
- pseudo-aristocratic — of or relating to government by an aristocracy.
- pseudo-biographical — of or relating to a person's life: He's gathering biographical data for his book on Milton.
- pseudo-conservative — disposed to preserve existing conditions, institutions, etc., or to restore traditional ones, and to limit change.
- pseudo-experimental — pertaining to, derived from, or founded on experiment: an experimental science.
- pseudo-hieroglyphic — noting or pertaining to a script dating from the second millennium b.c. that appears to be syllabic and to represent the Phoenician language and that is inscribed on objects found at Byblos.
- pseudo-intransitive — denoting an occurrence of a normally transitive verb in which a direct object is not explicitly stated or forms the subject of the sentence, as in Margaret is cooking or these apples cook well
- pseudo-professional — following an occupation as a means of livelihood or for gain: a professional builder.
- pseudohermaphrodite — an individual having internal reproductive organs of one sex and external sexual characteristics resembling those of the other sex or being ambiguous in nature. Compare hermaphrodite (def 1).
- psychoendocrinology — the study of the relationship between the endocrine system and various symptoms or types of mental illness.
- radius of curvature — the absolute value of the reciprocal of the curvature at a point on a curve.
- reactive depression — depression occurring in response to some situational stress, as loss of one's job.
- recording secretary — an officer charged with keeping the minutes of meetings and responsible for the records.
- 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 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.
- reserved occupation — in time of war, an occupation from which one will not be called up for military service
- resonance radiation — radiation emitted by an atom or molecule, having the same frequency as that of an incident particle, as a photon, and usually involving a transition to the lowest energy level of the atom or molecule.
- rhodesian ridgeback — a large short-haired breed of dog characterized by a ridge of hair growing along the back in the opposite direction to the rest of the coat. It was originally a hunting dog from South Africa
- ride roughshod over — shod with horseshoes having projecting nails or points.
- saber-toothed tiger — any of several extinct members of the cat family Felidae from the Oligocene to Pleistocene Epochs, having greatly elongated, saberlike upper canine teeth.
- sabre-toothed tiger — any of various extinct Tertiary felines of the genus Smilodon and related genera, with long curved upper canine teeth
- saddle-billed stork — a large stork, Ephippiorhynchus senegalensis, of West Africa, having a white and black body and a long, red and black bill.
- samoa standard time — a standard time used in the zone which includes American Samoa, corresponding to the mean solar time of the 165th meridian west of Greenwich, England: it is eleven hours behind Greenwich time
- san bernardino pass — a pass over the Lepontine Alps in SE Switzerland. Highest point: 2062 m (6766 ft)
- sandwich generation — the generation of people still raising their children while having to care for their aging parents.
- santiago del estero — a city in N Argentina.
- screen actors guild — a labor union for motion-picture performers, founded in 1933. Abbreviation: SAG.
- sea floor spreading — a process in which new ocean floor is created as molten material from the earth's mantle rises in margins between plates or ridges and spreads out.
- sea-floor spreading — a process in which new ocean floor is created as molten material from the earth's mantle rises in margins between plates or ridges and spreads out.
- secondary dentition — the permanent dentition
- secondary education — education at high-school level
- secondary infection — an infection resulting from another infection
- secondary intention — See under intention (def 5b).
- secondary picketing — the picketing by strikers of a place of work that supplies goods to or distributes goods from their employer
- secondary qualities — one of the qualities attributed by the mind to an object perceived, such as color, temperature, or taste.
- secondary-intention — an act or instance of determining mentally upon some action or result.
- self-administration — the management of any office, business, or organization; direction.
- self-discrimination — an act or instance of discriminating, or of making a distinction.
- sell down the river — a natural stream of water of fairly large size flowing in a definite course or channel or series of diverging and converging channels.
- semiconductor laser — a laser in which a semiconductor is the light-emitting source, used in many medical procedures.
- semipalmated plover — a New World plover, Charadrius semipalmatus, having a black ring around the chest and semipalmate feet, inhabiting beaches and salt marshes.
- senatorial district — one of a fixed number of districts into which a state of the U.S. is divided, each electing one member to the state senate.