20-letter words containing r, u, m, i

permonosulfuric acid — persulfuric acid (def 1).
peruvian mastic tree — a pepper tree, Schinus molle.
polymorphic function — a function in a computer program that can deal with a number of different types of data
population parameter — a quantity or statistical measure that, for a given population, is fixed and that is used as the value of a variable in some general distribution or frequency function to make it descriptive of that population: The mean and variance of a population are population parameters.
potassium bichromate — an orange-red, crystalline, water-soluble, poisonous powder, K 2 Cr 2 O 7 , used chiefly in dyeing, photography, and as a laboratory reagent.
potassium bitartrate — cream of tartar.
potassium dichromate — an orange-red crystalline soluble solid substance that is a good oxidizing agent and is used in making chrome pigments and as a bleaching agent. Formula: K2Cr2O7
potassium-bitartrate — a white, crystalline, water-soluble powder, C 4 H 5 KO 6 , used chiefly as an ingredient in baking powders and in galvanic tinning of metals. Also called potassium bitartrate, potassium acid tartrate. Compare tartar (def 3).
precision instrument — finely-tuned device
premenstrual tension — Premenstrual tension is the same as premenstrual syndrome. The abbreviation PMT is often used.
prenuptial agreement — A prenuptial agreement is a written contract made between a man and a woman before they marry, in which they state how their assets such as property and money should be divided if they get divorced.
prime number theorem — the theorem that the number of prime numbers less than or equal to a given number is approximately equal to the given number divided by its natural logarithm.
prince william sound — a sound in the Gulf of Alaska, on the S coast of Alaska: S end of Trans-Alaska oil pipeline at port of Valdez.
production agreement — a contract concerning the production or manufacture of something
programming language — a high-level language used to write computer programs, as COBOL or BASIC, or, sometimes, an assembly language.
public administrator — an official of a city, county, or state government.
quaker meeting house — a place where Quakers gather for worship
quantum field theory — any theory in which fields are treated by the methods of quantum mechanics; each field can then be regarded as consisting of particles of a particular kind, which may be created and annihilated.
red mercuric sulfide — a crystalline, water-insoluble, poisonous compound, HgS, occurring as a coarse, black powder (black mercuric sulfide) or as a fine, bright-scarlet powder (red mercuric sulfide) used chiefly as a pigment and as a source of the free metal.
reductio ad absurdum — a reduction to an absurdity; the refutation of a proposition by demonstrating the inevitably absurd conclusion to which it would logically lead.
republic of maldives — a republic occupying an archipelago of 1087 coral islands in the Indian Ocean, southwest of Sri Lanka: came under British protection in 1887; became independent in 1965 and a republic in 1968; member of the Commonwealth (1982–2016). The economy and infrastructure were severely damaged in the Indian Ocean tsunami of December 2004. Official language: Divehi. Official religion: (Sunni) Muslim. Currency: rufiyaa. Capital: Malé. Pop: 393 988 (2013 est). Area: 298 sq km (115 sq miles)
retirement community — a group of houses in a suburban area or a town designed primarily for retired persons.
return on investment — the amount of profit, before tax and after depreciation, from an investment made, usually expressed as a percentage of the original total cost invested. Abbreviation: ROI.
rheumatoid arthritis — a chronic autoimmune disease characterized by inflammation of the joints, frequently accompanied by marked deformities, and ordinarily associated with manifestations of a general, or systemic, affliction.
rocky mountain basic — (language) The BASIC language used by Hewlett Packard on their 680x0-based computers. Rocky Mountain Basic is good for interfaces to IEEE 488 controls and contains many mathematical and matrix functions. It has about 600 commands. Typical applications include automatic test stations.
rocky mountain sheep — bighorn.
rotations per minute — revolutions per minute
run-time environment — (operating system) A collection of subroutines and environment variables that provide commonly used functions and data for a program while it is running. Compare run-time support.
secure accommodation — an institution where young offenders are kept in custody
semiautobiographical — pertaining to or being a fictionalized account of an author's own life.
serra da mantiqueira — a mountain range in SE Brazil, running parallel to the coast. Highest point, 9140 feet (2785 meters).
shibah asar betammuz — Shivah Asar Betammuz.
shivah asar betammuz — a Jewish fast day observed on the 17th day of Tammuz in memory of the breach of the walls of Jerusalem by the Romans in a.d. 70.
sierra madre del sur — a plateau mountain range in Guerrero and Oaxaca states, S Mexico. Highest peak 12,149 feet (3703 meters).
sodium fluoroacetate — a white, amorphous, water-soluble, poisonous powder, C 2 H 2 FO 2 Na, used as a rodenticide.
sodium meta-arsenite — sodium arsenite.
sound motion picture — a motion picture with a soundtrack.
south american plate — a major tectonic division of the earth's crust, comprising the continent of South America and several ocean basins and bounded on the north by the Caribbean Plate, on the east by the Mid-Atlantic Ridge, on the west by a submarine trench that borders the western coast of the continent, and on the south by the Antarctic Plate.
structural isomerism — Chemistry. the relation of two or more compounds, radicals, or ions that are composed of the same kinds and numbers of atoms but differ from each other in structural arrangement (structural isomerism) as CH 3 OCH 3 and CH 3 CH 2 OH, or in the arrangement of their atoms in space and therefore in one or more properties. Compare optical isomerism, stereoisomerism.
summary jurisdiction — the right a court has to adjudicate immediately upon some matter arising during its proceedings
systemic circulation — the circulatory system in general.
temperature gradient — rate of change of temperature with distance.
the garment industry — the manufacturing of items of clothing
the gnomes of zurich — Swiss bankers and financiers
the methodist church — a group of people within the Christian religion who follow a system of faith and practice initiated by the English preacher John Wesley (1703–91) and his followers
thermal conductivity — the amount of heat per unit time per unit area that can be conducted through a plate of unit thickness of a given material, the faces of the plate differing by one unit of temperature.
this time, for sure! — (exclamation) Ritual affirmation frequently uttered during protracted debugging sessions involving numerous small obstacles (e.g. attempts to bring up a UUCP connection). For the proper effect, this must be uttered in a fruity imitation of Bullwinkle J. Moose. Also heard: "Hey, Rocky! Watch me pull a rabbit out of my hat!" The canonical response is, of course, "But that trick *never* works!" See hacker humour.
to burst into flames — If something bursts into flames or bursts into flame, it suddenly starts burning strongly.
to make up your mind — If you make up your mind or make your mind up, you decide which of a number of possible things you will have or do.
tobacco mosaic virus — a retrovirus causing mosaic disease in members of the nightshade family. Abbreviation: TMV.

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