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

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.
on the shady side of — beyond (a given age); older than
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.
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.
peaceful coexistence — competition without war, or a policy of peace between nations of widely differing political systems and ideologies, especially between Communist and non-Communist nations: peaceful coexistence between the U.S. and the Soviet Union.
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
pentose nucleic acid — a nucleic acid containing a pentose.
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).
physical examination — an examination, usually by a physician, of a person's body in order to determine his or her state of health or physical fitness, as for military service or participation in a sport.
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.
pleased with oneself — If someone seems very satisfied with something they have done, you can say that they are pleased with themselves, especially if you think they are more satisfied than they should be.
poor man's something — a (cheaper) substitute for something
population explosion — the rapid increase in numbers of a particular species, especially in the world's human population since the end of World War II, attributed to an accelerating birthrate, a decrease in infant mortality, and an increase in life expectancy.
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.
postal delivery zone — zone (def 10).
postnatal depression — a form of clinical depression that occurs in mothers after the birth of a baby
potassium antimonate — a white, crystalline, slightly water-soluble powder, KSbO 3 , used chiefly as a pigment in paints.
potassium binoxalate — a white, crystalline, hygroscopic, poisonous solid, KHC 2 O 4 , that is usually hydrated: used chiefly for removing ink stains, cleaning metal and wood, and in photography.
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
prosecuting attorney — the public officer in a county, district, or other jurisdiction charged with carrying on the prosecution in criminal proceedings.

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