18-letter words containing o
- rescind a contract — If an insurer rescinds an insurance contract, it terminates it because facts have been concealed or misrepresented by the proposer.
- residential school — (in Canada) a boarding school maintained by the Canadian government for Indian and Inuit children from sparsely populated settlements
- respiratory arrest — cessation of breathing
- 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.
- return to the fold — come back home
- return-flue boiler — a fire-tube boiler having flues that collect the combustion gases at the end of the boiler opposite the fire door and pass them through the boiler to an uptake above the fire door.
- reverberation time — the time it takes for a sound made in a room to diminish by 60 decibels.
- reverse angle shot — Movies. reverse shot.
- reverse psychology — (in nontechnical use) a method of getting another person to do what one wants by pretending not to want it or to want something else or something more.
- reversionary bonus — a bonus added to the sum payable on death or at the maturity of a with-profits assurance policy
- revolution counter — a device for counting or recording the number of revolutions made by a rotating shaft, as of a motor or engine.
- revolutionary wars — American Revolution.
- rheims-douay bible — Douay Bible.
- rhode island white — one of a dual-purpose American breed of chickens having white feathers and a rose comb.
- rhodes scholarship — one of a number of scholarships at Oxford University, established by the will of Cecil Rhodes, for selected students (Rhodes scholars) from the British Commonwealth and the United States.
- rhondda cynon taff — a county borough in S Wales, created from part of Mid Glamorgan in 1996. Pop: 231 600 (2003 est). Area: 558 sq km (215 sq miles)
- rhyming dictionary — a specialist dictionary organized by the final sounds of words, used to write poetry
- ribbon development — housing or commercial buildings built along a stretch of road.
- ride a hobby horse — an activity or interest pursued for pleasure or relaxation and not as a main occupation: Her hobbies include stamp-collecting and woodcarving.
- 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.
- rock cornish (hen) — Cornish (sense 3) Cornish (sense 3b)
- 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.
- roman architecture — buildings in style of ancient Rome
- roman congregation — any of the executive departments of the Curia Romana as the administration of the Roman Catholic Church.
- room for manoeuvre — If you have room for manoeuvre, you have the opportunity to change your plans if it becomes necessary or desirable.
- room occupancy tax — Room occupancy tax is a tax that guests at a hotel have to pay in order to stay there.
- root canal therapy — endodontics.
- rooted to the spot — If you are rooted to the spot, you are unable to move because you are very frightened or shocked.
- rosebay willowherb — a perennial onagraceous plant, Chamerion (formerly Epilobium) angustifolium, that has spikes of deep pink flowers and is widespread in open places throughout N temperate regions
- rotary clothesline — an apparatus of radiating spokes that support lines on which clothes are hung to dry
- rotational latency — (storage, hardware) The time for the start of the required sector on a disk to appear underneath the read/write head. The worst case is where it has just passed the head when the request is received. For a disk drive with N heads per surface, rotating at R revolutions per minute, the average rotational latency will be L = 30/NR seconds. Rotational latency is one component of access time.
- rotational molding — a method for molding hollow plastic objects by placing finely divided particles in a hollow mold that is rotated about two axes, exposing it to heat and then to cold.
- rotten to the core — person: wicked
- 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
- rufous hummingbird — a reddish-brown hummingbird, Selasphorus rufus, of western North America.
- rule of engagement — a directive issued by a military authority controlling the use and degree of force, especially specifying circumstances and limitations for engaging in combat.
- run one's eye over — to glance at hurriedly
- runge-kutta method — a numerical method, involving successive approximations, used to solve differential equations.
- running commentary — non-stop description of sth