20-letter words containing s, t, r, a, i, n

olfactory anesthesia — absence or loss of the sense of smell.
omega-minus particle — a baryon with strangeness −3, isotopic spin 0, and negative charge; predicted from the mathematics of the Eightfold Way and subsequently discovered. Symbol: Ω −.
on o's best behavior — If someone is on their best behavior, they are trying very hard to behave well.
one's heart's desire — If you say that someone or something is your heart's desire, you mean that you want that person or thing very much.
one's spiritual home — Your spiritual home is the place where you feel that you belong, usually because your ideas or attitudes are the same as those of the people who live there.
operating conditions — Operating conditions are a set of conditions for operating a particular system or process.
operation barbarossa — the codename for Hitler's invasion (1941) of Russia
operational calculus — a method for solving a differential equation by treating differential operators as ordinary algebraic quantities, thus obtaining a simpler problem.
operational database — (database) A database containing up-to-date, modifiable data, in contrast to a decision support database.
operational strategy — a plan or set of plans for successfully running a business, etc
organization expense — the costs associated with organizing a business entity and bringing it into existence
orthognathic surgery — the surgical correction of deformities or malpositions of the jaw.
oscillating universe — a variant model of the closed universe in which the universe undergoes cycles of expansion and contraction.
overenthusiastically — With excessive enthusiasm.
paper qualifications — qualifications gained through official examinations, etc, rather than through experience
parametric equations — one of two or more equations expressing the location of a point on a curve or surface by determining each coordinate separately.
parataxic distortion — a distortion in perception, especially of interpersonal relationships, based on a tendency to perceive others in accordance with a pattern determined by previous experiences.
partitioned data set — (file format) (PDS) A data set on an IBM mainframe that contains members, each of which acts like a separate data set. Partitioned data sets are more space-efficient than individual data sets, because they can put more than one data set on a track. They are also used to hold libraries, with one function per member. The syntax for a member is NAME.OF.PDS(MEMBER) although some systems (such as Phoenix) could use NAME.OF.PDS:MEMBER Original PDSes were of fixed size, and needed frequent compression to recover space after deleting or changing members. Newer PDS/E Extended PDSes do not have this problem.
peculiar institution — black slavery in the southern U.S. before the Civil War.
pentobarbital sodium — a barbiturate drug used in medicine as a sedative and hypnotic. Formula: C11H17N2O3Na
periarteritis nodosa — polyarteritis.
personality disorder — any of a group of mental disorders characterized by deeply ingrained maladaptive patterns of behavior and personality style, which are usually recognizable as early as adolescence and are often lifelong in duration.
peruvian mastic tree — a pepper tree, Schinus molle.
photogelatin process — collotype (def 1).
photophosphorylation — phosphorylation that utilizes light as a source of energy, as in the formation of ATP from ADP and phosphorus during photosynthesis.
pipeline burst cache — (hardware, storage) (PB Cache) A synchronous cache built from pipelined SRAM. A cache in which reading or writing a new location takes multiple cycles but subsequent locations can be accessed in a single cycle. On Pentium systems in 1996, pipeline burst caches are frequently used as secondary caches. The first 8 bytes of data are transferred in 3 CPU cycles, and the next 3 8-byte pieces of data are transferred in one cycle each.
planetary precession — the small component of the precession of the equinoxes contributed by the motion of the ecliptic, the change in orientation of the plane of the earth's orbit being produced by the gravitational attraction of the planets.
polyanthus narcissus — a Eurasian amaryllidaceous plant, Narcissus tazetta, having clusters of small yellow or white fragrant flowers
poor man's something — a (cheaper) substitute for something
population inversion — a condition of matter in which more electrons are in a high energy state than in a lower energy state, as is required for the operation of a laser.
post-synchronization — the recording of dialogue and sound effects in synchronization with the picture after the film has been shot.
postal delivery zone — zone (def 10).
postnatal depression — a form of clinical depression that occurs in mothers after the birth of a baby
pound cost averaging — a method of accumulating capital by investing a fixed sum in a particular security at regular intervals, in order to achieve an average purchase price below the arithmetic average of the market prices on the purchase dates
premenstrual tension — Premenstrual tension is the same as premenstrual syndrome. The abbreviation PMT is often used.
prepositional phrase — a phrase consisting of a preposition, its object, which is usually a noun or a pronoun, and any modifiers of the object, as in the gray desk I use.
prescription glasses — corrective spectacles
presentation manager — The elephantine graphical user interface to the OS/2 operating system.
preservation society — a society dedicated to the preservation of something, especially a building, environment, or animal
presidential primary — a direct primary for the selection of state delegates to a national party convention and the expression of preference for a U.S. presidential nominee.
price discrimination — the practice of offering identical goods to different buyers at different prices, when the goods cost the same.
price-earnings ratio — the current price of a share of common stock divided by earnings per share over a 12-month period, often used in stock evaluation. Abbreviation: p/e.
private investigator — private detective. Abbreviation: PI, p.i., P.I.
prohibited substance — a substance, such as a drug, etc, that is banned or forbidden by law or other authority
property speculation — the buying or selling of property in the hope of deriving capital gains
proportional spacing — a feature of some typewriters and other output devices whereby the space allotted to each character is determined by the width of the character
prosecuting attorney — the public officer in a county, district, or other jurisdiction charged with carrying on the prosecution in criminal proceedings.
public administrator — an official of a city, county, or state government.
pyrenees-atlantiques — a department in SW France. 2978 sq. mi. (7710 sq. km). Capital: Pau.
quaker meeting house — a place where Quakers gather for worship

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