20-letter words containing m, i, s, o, l
- 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
- 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)
- royal leamington spa — a city in Warwickshire, central England: health resort.
- saint john ambulance — an organization that provides first aid and first-aid training
- salmonella poisoning — an illness caused by ingestion of a salmonella bacterium
- satellite chromosome — a type of densely staining chromosome of uncertain biological function, found in many plant and animal species.
- scientific socialism — Marxist socialism
- scottish nationalism — a political ideology advocating the independence of Scotland
- second law of motion — any of three laws of classical mechanics, either the law that a body remains at rest or in motion with a constant velocity unless an external force acts on the body (first law of motion) the law that the sum of the forces acting on a body is equal to the product of the mass of the body and the acceleration produced by the forces, with motion in the direction of the resultant of the forces (second law of motion) or the law that for every force acting on a body, the body exerts a force having equal magnitude and the opposite direction along the same line of action as the original force (third law of motion or law of action and reaction)
- semiautobiographical — pertaining to or being a fictionalized account of an author's own life.
- single point mooring — monobuoy.
- small craft advisory — a U.S. National Weather Service advisory of sustained winds, over coastal and inland waters, with speeds of 20–33 knots (23–38 mph, 10–17 m/sec). Regional NWS offices have discretion over the choice of the lower limit.
- snows of kilimanjaro — a short story (1936) by Ernest Hemingway.
- societal development — the formation and transformation of social life, customs, institutions, etc.
- sodium fluoroacetate — a white, amorphous, water-soluble, poisonous powder, C 2 H 2 FO 2 Na, used as a rodenticide.
- sodium metabisulfite — Sodium metabisulfite is a crystalline compound used as an antioxidant.
- solitary confinement — the confinement of a prisoner in a cell or other place in which he or she is completely isolated from others.
- 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.
- 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.
- 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.
- synoptic meteorology — a branch of meteorology analyzing data collected simultaneously over a wide region, for the purpose of weather forecasting.
- system international — Système International d'Unités
- systemic circulation — the circulatory system in general.
- television programme — a programme broadcast on television
- three-dimensionality — having, or seeming to have, the dimension of depth as well as width and height.
- to burst into flames — If something bursts into flames or bursts into flame, it suddenly starts burning strongly.
- to give someone hell — If you say that someone gives you hell, you are emphasizing that they shout at you very angrily because of something you have done wrong.
- twiddle one's thumbs — to turn about or play with lightly or idly, especially with the fingers; twirl.
- ultimate constituent — an element of a construction that cannot be further divided into grammatical constituents: the morphemes of an utterance are usually considered to be its ultimate constituents.
- unemployment figures — statistics relating to the number of people who are out of work
- upper yosemite falls — a section of Yosemite Falls in central California, in the Yosemite National Park that is 436 m (1430 ft) high
- vesicular stomatitis — a disease of horses, swine, and cattle, similar in its symptoms to foot-and-mouth disease, and characterized by blisters on the lips, snout, and oral mucous membranes.
- webbing clothes moth — a small brown moth, Tineola biselliella, the larva of which feeds on woolens and spins a web when feeding.
- william westmoreland — William Childs [chahyldz] /tʃaɪldz/ (Show IPA), 1914–2005, U.S. army officer: commander of U.S. forces in Vietnam and Thailand 1964–68.
- wilson cloud chamber — cloud chamber.
- winter olympic games — an international contest of winter sports, esp skiing, held every four years
- with all one's might — If you do something with all your might, you do it using all your strength and energy.
- woolly spider monkey — a rare related monkey, Brachyteles arachnoides, of SE Brazil