20-letter words containing s, n, i

not mince your words — If you say that someone does not mince their words, you mean that they speak in a forceful and direct way, especially when saying something unpleasant to someone.
notre dame mountains — a mountain range in E Quebec, Canada, an extension of the Green Mountains in Vermont and a portion of the Appalachian Mountains: about 500 miles (800 km) long, rising about 2000 feet (610 meters).
nummulitic limestone — limestone composed predominantly of fossil nummulites.
occupation franchise — the right of a tenant to vote in national and local elections
occupation groupings — a system of classifying people according to occupation, based originally on information obtained by government census and subsequently developed by market research. The classifications are used by the advertising industry to identify potential markets. The groups are A, B, C1, C2, D, and E
occupational disease — Also called industrial disease. a disease caused by the conditions or hazards of a particular occupation.
occupational pension — a pension scheme provided for the members of a particular occupation or by a specific employer or group of employers
ode to the west wind — a poem (1820) by Shelley.
old english sheepdog — one of an English breed of large working dogs having a long, shaggy, gray or blue-merle and white coat that hangs over the eyes, and a bobbed tail, originally developed to drive sheep and cattle.
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 that/this account — You can use on that account or on this account when you want to say that something happens for the reason you have just mentioned.
on the shady side of — beyond (a given age); older than
on the sunny side of — younger than (a specified age)
on tiptoe/on tiptoes — If you do something on tiptoe or on tiptoes, you do it standing or walking on the front part of your foot, without putting your heels on the ground.
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 misspent youth — the period when one is young and spend's one's time doing foolish, bad, or frivolous things
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.
ostensive definition — the definition of a term by pointing to one or more examples to which the term can be applied.
overenthusiastically — With excessive enthusiasm.
owner-occupied house — a house that is owned by the person who lives in it
packed like sardines — If you say that a crowd of people are packed like sardines, you are emphasizing that they are sitting or standing so close together that they cannot move easily.
paper qualifications — qualifications gained through official examinations, etc, rather than through experience
pappus of alexandria — 3rd century bc, Greek mathematician, whose eight-volume Synagoge is a valuable source of information about Greek mathematics
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.
parkinson's syndrome — a complex of symptoms indistinguishable from Parkinson's disease, commonly affecting boxers or sometimes occurring as a result of substance abuse or an encephalitic infection.
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.
pass in one's marble — to die
patagonian toothfish — a large food fish, Dissostichus eleginoides, found in the cold deep waters of the southern Atlantic and Indian oceans
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.
permonosulfuric acid — persulfuric acid (def 1).
personal cleanliness — physical cleanliness; the cleanliness of a person's body and habits
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.
pessimising compiler — /pes'*-mi:z"ing k*m-pi:l"r/ (Antonym of "optimising compiler") A compiler that produces object code that is worse than the straightforward or obvious hand translation. The implication is that the compiler is actually trying to optimise the program, but through excessive cleverness is doing the opposite. A few pessimizing compilers have been written on purpose, however, as pranks or burlesques.
pest control officer — a person who gets rid of pests such as rats and mice

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