18-letter words containing t, o, r, s
- respiratory system — the system by which oxygen is taken into the body and an exchange of oxygen and carbon dioxide takes place; in mammals the system includes the nasal passages, pharynx, trachea, bronchi, and lungs.
- rest on one's oars — a long shaft with a broad blade at one end, used as a lever for rowing or otherwise propelling or steering a boat.
- restoration comedy — English comedy of the period of the Restoration, stressing manners and social satire.
- restraint of trade — action tending to interrupt the free flow of goods and services, as by price fixing and other practices that have the effect of reducing competition.
- restriction enzyme — any of a group of enzymes that catalyze the cleavage of DNA molecules at specific sites: used for gene splicing in recombinant DNA technology and for chromosome mapping.
- resurrection plant — a desert plant, Selaginella lepidophylla, occurring from Texas to South America, having stems that curl inward when dry.
- resuscitation room — an intensive care unit
- retirement pension — income: no longer at work
- retrograde amnesia — a memory disorder characterized by an inability to remember events or experiences that occurred before a significant point in time.
- reverse angle shot — Movies. reverse shot.
- revolutionary wars — American Revolution.
- rhode island white — one of a dual-purpose American breed of chickens having white feathers and a rose comb.
- right-to-work laws — a state law making it illegal to refuse employment to a person for the sole reason that he or she is not a union member.
- rolled-steel joist — a steel beam, esp one with a cross section in the form of a letter H or I
- rolling resistance — The rolling resistance of a wheel or ball is its resistance to movement caused by friction between it and the surface it is rolling on.
- rooted to the spot — If you are rooted to the spot, you are unable to move because you are very frightened or shocked.
- rotary clothesline — an apparatus of radiating spokes that support lines on which clothes are hung to dry
- row address strobe — (storage) (RAS) An input to a dynamic random-access memory (DRAM) to indicate that the row address lines are valid.
- rub shoulders with — to mix with socially or associate with
- rubbish collection — the collection of domestic refuse for disposal
- russian federation — a republic extending from E Europe to N and W Asia. 6,593,000 sq. mi. (17,076,000 sq. km). Capital: Moscow.
- russian revolution — Also called February Revolution. the uprising in Russia in March, 1917 (February Old Style), in which the Czarist government collapsed and a provisional government was established.
- safety regulations — regulations or rules that are put in place to ensure a product, event, etc, is safe and not dangerous
- saint george's day — April 23, celebrated in parts of the British Commonwealth in honor of the patron saint of Britain and especially in New Zealand as a bank holiday.
- saint john's bread — carob (def 2).
- salt of phosphorus — a colorless, odorless, crystalline, water-soluble solid, NaNH 4 HPO 4 ⋅4H 2 O, originally obtained from human urine: used as a blowpipe flux in testing metallic oxides.
- sao joao de meriti — a city in SE Brazil, NW of Rio de Janeiro.
- saturated solution — A saturated solution is a solution in which there is so much solute that if there was any more, it would not dissolve.
- saturation bombing — intense area bombing intended to destroy everything in the target area.
- school certificate — (in England and Wales between 1917 and 1951 and currently in New Zealand) a certificate awarded to school pupils who pass a public examination: the equivalent of GCSE
- school of motoring — a centre where people pay for lessons to learn to drive
- science dictionary — a specialized dictionary covering terms in the life, earth, and physical sciences, such as the online Science Dictionary on Dictionary.com. A science dictionary includes many technical terms with precise, specialized meanings—terms not normally found in general dictionaries—making it an invaluable resource for students and professionals in scientific fields.
- scientific officer — a police officer who carries out forensic examinations
- scissors-and-paste — designating or of a piece of writing that has been assembled from a variety of sources rather than by original research, often in a hasty or uninspired way
- scottish deerhound — one of a Scottish breed of large, tall hunting dogs having a medium-length, wiry, gray or reddish-fawn coat, originally developed for hunting and bringing down deer, and known as the royal dog of Scotland.
- scottish secretary — the Secretary of State for Scotland, head of the Scotland Office, a UK government department with responsibility for some Scottish affairs
- scratch one's head — If you say that someone is scratching their head, you mean that they are thinking hard and trying to solve a problem or puzzle.
- scruff of the neck — If someone takes you by the scruff of the neck, they take hold of the back of your neck or collar suddenly and roughly.
- search-and-destroy — designed to find and destroy by bombing etc
- seasonal promotion — Seasonal promotions are items marketed to customers at the appropriate time of year, such as coats in the winter and bathing suits in the summer.
- seasonal variation — season-related variation
- second triumvirate — the coalition and joint rule of the Roman Empire by Antony, Lepidus, and Octavian, begun in 43 bc
- secondary industry — manufacturing, services, etc.
- secretary of state — the head and chief administrator of the U.S. Department of State. Compare foreign minister.
- security of tenure — (in Britain) the right of a tenant to continue to occupy a dwelling or site unless the landlord obtains a court order for possession of the property or termination of the tenancy agreement
- selective abortion — the aborting of particular embryos for medical or social reasons
- self-certification — statement of sick leave
- self-contradiction — an act or instance of contradicting oneself or itself.
- self-contradictory — an act or instance of contradicting oneself or itself.
- self-determination — determination by oneself or itself, without outside influence.