20-letter words containing i, m, e, r, s
- precision instrument — finely-tuned device
- premenstrual tension — Premenstrual tension is the same as premenstrual syndrome. The abbreviation PMT is often used.
- prescriptive grammar — an approach to grammar that is concerned with establishing norms of correct and incorrect usage and formulating rules based on these norms to be followed by users of the language.
- presentation manager — The elephantine graphical user interface to the OS/2 operating system.
- 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.
- primary spermatocyte — a male germ cell (primary spermatocyte) that gives rise by meiosis to a pair of haploid cells (secondary spermatocytes) that give rise in turn to spermatids.
- 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.
- psychometric testing — the use of psychometric tests, often as a selection method
- psychomotor epilepsy — temporal-lobe epilepsy.
- quaker meeting house — a place where Quakers gather for worship
- rapid transit system — a rail or other system providing rapid public transport
- real-time processing — data-processing by a computer which receives constantly changing data, such as information relating to air-traffic control, travel booking systems, etc, and processes it sufficiently rapidly to be able to control the source of the data
- 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.
- registered trademark — brand name
- relative atomic mass — the ratio of the average mass per atom of the naturally occurring form of an element to one-twelfth the mass of an atom of carbon-12
- reminder advertising — a type of advertising designed to remind customers that an existing or well-known product is still available and for sale
- 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)
- reservations manager — A reservations manager at a hotel is responsible for the reservations at the hotel.
- restriction fragment — a length of DNA cut from the strand by a restriction enzyme.
- retinitis pigmentosa — degeneration of the retina manifested by night blindness and gradual loss of peripheral vision, eventually resulting in tunnel vision or total blindness.
- 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.
- ride on shank's mare — to walk
- rocky mountain sheep — bighorn.
- rotations per minute — revolutions per minute
- royal leamington spa — a city in Warwickshire, central England: health resort.
- saint mary magdalene — a woman of Magdala (ˈmæɡdələ ) in Galilee whom Jesus cured of evil spirits (Luke 8:2) and who is often identified with the sinful woman of Luke 7:36–50. In Christian tradition she is usually taken to have been a prostitute. Feast day: July 22
- satellite chromosome — a type of densely staining chromosome of uncertain biological function, found in many plant and animal species.
- saxe-weimar-eisenach — a former grand duchy in Thuringia in central Germany.
- seating arrangements — the seating plan for a formal occasion
- 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.
- senior aircraftwoman — a rank in the Royal Air Force comparable to that of a private in the army, though not the lowest rank in the Royal Air Force
- serra da mantiqueira — a mountain range in SE Brazil, running parallel to the coast. Highest point, 9140 feet (2785 meters).
- shear transformation — a map of a coordinate space in which one coordinate is held fixed and the other coordinate or coordinates are shifted.
- 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).
- single point mooring — monobuoy.
- sir william berkeley — Busby [buhz-bee] /ˈbʌz bi/ (Show IPA), (William Berkeley Enos) 1895–1976, U.S. choreographer and musical-film director.
- 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.
- solitary confinement — the confinement of a prisoner in a cell or other place in which he or she is completely isolated from others.
- 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.
- spanish-american war — the war between the U.S. and Spain in 1898.
- specific performance — (especially in the sale of land) literal compliance with one's contractual promises pursuant to a judicial mandate.
- spiral of archimedes — a curve that is the locus of a point that moves outward with uniform speed along a vector, beginning at the origin, while the vector rotates about the origin with uniform angular velocity. Equation (in polar coordinates): r = aθ.