18-letter words containing s, i, m, p, o
- precious moonstone — moonstone (def 1).
- presumption of law — a presumption based upon a policy of law or a general rule and not upon the facts or evidence in an individual case.
- prism spectrometer — an optical device for measuring wavelengths, deviation of refracted rays, and angles between faces of a prism, especially an instrument (prism spectrometer) consisting of a slit through which light passes, a collimator, a prism that deviates the light, and a telescope through which the deviated light is viewed and examined.
- prisoner's dilemma — (in game theory) a scenario in which the outcome of one person's decision is determined by the simultaneous decisions of the other participants, resulting in a bad outcome for all of them if all act in their own self-interest.
- processionary moth — a moth of the family Thaumetopoeidae, esp the oak processionary moth (Thaumetopoea processionea), the larvae of which leave the communal shelter nightly for food in a V-shaped procession
- programming skills — the skills required to write a program so that data may be processed by a computer
- provision merchant — a person or company in the business of retailing food and other provisions
- pseudo-competitive — of, pertaining to, involving, or decided by competition: competitive sports; a competitive examination.
- pseudo-symptomatic — pertaining to a symptom or symptoms.
- ptomaine poisoning — (erroneously) food poisoning thought to be caused by ptomaine.
- publishing company — a firm which publishes books
- pulmonary embolism — the blockage of a pulmonary artery, often by a blood clot, that stops the flow of blood to the lungs and which can result in death if untreated
- pulmonic airstream — a current of lung air set in motion by the respiratory muscles in the production of speech.
- pygmy hippopotamus — a small hippopotamus, Choeropsis liberiensis, of forests and swamps in western Africa.
- recess appointment — a person appointed to an office by the President of the United States without approval from the Senate because the Senate is in recess
- registered company — a company which has officially registered its business
- respiratory system — the system by which oxygen is taken into the body and an exchange of oxygen and carbon dioxide takes place; in mammals the system includes the nasal passages, pharynx, trachea, bronchi, and lungs.
- retirement pension — income: no longer at work
- seasonal promotion — Seasonal promotions are items marketed to customers at the appropriate time of year, such as coats in the winter and bathing suits in the summer.
- self-comprehending — to understand the nature or meaning of; grasp with the mind; perceive: He did not comprehend the significance of the ambassador's remark.
- self-contemplation — the act or process of thinking about oneself or one's values, beliefs, behavior, etc.
- semiprecious stone — See at semiprecious.
- september holidays — a period of time in September when people do not have to go to school, college or work
- shipping documents — documents relating to the sending of a shipment of goods, for example containing details of contents, weight, value etc.
- shoot from the hip — the act of shooting with a bow, firearm, etc.
- shotgun microphone — a directional microphone with a narrow-angle range of sensitivity.
- simple enumeration — a procedure for arriving at empirical generalizations by haphazard accumulation of positive instances.
- sleeping policeman — a bump built across roads, esp in housing estates, to deter motorists from speeding
- sling psychrometer — a psychrometer so designed that the wet-bulb thermometer can be ventilated, to expedite evaporation, by whirling in the air.
- slow-motion replay — a showing again in slow motion of a sequence of action, esp of part of a sporting contest immediately after it happens
- soda-lime feldspar — plagioclase.
- sodium hyposulfite — sodium thiosulfate.
- sodium polysulfide — a yellow-brown, water-soluble, granular powder, Na 2 S n , used chiefly in the manufacture of sulfur dyes, insecticides, and synthetic rubber.
- sodium-vapour lamp — a type of electric lamp consisting of a glass tube containing neon and sodium vapour at low pressure through which an electric current is passed to give an orange light. They are used in street lighting
- something to spare — a surplus of something
- southampton island — an island in N Canada, in the Northwest Territories at the entrance to Hudson Bay. 19,100 sq. mi. (49,470 sq. km).
- spackling compound — spackle
- spectrocolorimetry — the quantitative measure of colors by spectrophotometry.
- spectrofluorimeter — an instrument in which the spectrum of secondarily emitted fluorescent light is used to identify chemical compounds.
- spectropolarimeter — an instrument for determining the extent to which plane-polarized light of various wavelengths is rotated by certain solutions, consisting of a combination of a spectroscope and a polarimeter.
- spherical geometry — the branch of geometry that deals with figures on spherical surfaces.
- spirits of ammonia — a 10% solution of ammonia in alcohol
- subatomic particle — physics:
- subsidiary company — a company whose controlling interest is owned by another company.
- summary proceeding — a mode of trial authorized by statute to be held before a judge without the usual full hearing.
- super giant slalom — a slalom race in which the course is longer and has more widely spaced gates than in a giant slalom.
- sustaining program — a radio or television program without a commercial sponsor.
- system-programming — a program, as an operating system, compiler, or utility program, that controls some aspect of the operation of a computer (opposed to application program).
- systematic phoneme — a phonological unit in generative phonology representing an underlying form that takes into account the relationship between phonological patterns and morphological variation, as the unit underlying the second vowel in both derive and derivative.
- television company — a company that broadcasts programmes by television