18-letter words containing s, o, r, c
- nonstriated muscle — smooth muscle
- nord-pas-de-calais — a region of N France, on the Straits of Dover (the Pas de Calais): coal-mining, textile, and metallurgical industries
- north lincolnshire — a unitary authority of NE England, in Lincolnshire: formerly (1975–96) part of the county of Humberside. Pop: 155 000 (2003 est). Area: 1497 sq km (578 sq miles)
- north saskatchewan — a river in S central Canada, flowing E from the Rocky Mountains and joining the South Saskatchewan River to form the Saskatchewan River. 760 miles (1223 km) long.
- north truchas peak — a mountain in N New Mexico, near Santa Fe: one of the three Truchas Peaks. 13,110 feet (3999 meters).
- northeast corridor — the long, narrow strip of land between Boston, New York City, and Washington, D.C., containing many adjacent urban areas.
- northern cameroons — German Kamerun. a region in W Africa: a German protectorate 1884–1919; divided in 1919 into British and French mandates.
- nurse practitioner — a registered nurse who has received special training for diagnosing and treating routine or minor ailments. Abbreviation: NP.
- nurse-practitioner — a registered nurse who has received special training for diagnosing and treating routine or minor ailments. Abbreviation: NP.
- office of readings — the first of the canonical hours; matins
- official solicitor — an officer of the Supreme Court of Judicature with special responsibilities for protecting the interests of persons under disability
- old curiosity shop — a novel (1840–41) by Dickens.
- on that/this score — You can use on that score or on this score to refer to something that has just been mentioned, especially an area of difficulty or concern.
- on the credit side — You say on the credit side in order to introduce one or more good things about a situation or person, usually when you have already mentioned the bad things about them.
- on your conscience — If you have something on your conscience, you feel guilty because you know you have done something wrong.
- optical disc drive — optical disk drive
- optical disk drive — (hardware) (Or "optical disc drive", "optical storage") A generic term for any device that reads and/or writes optical media, i.e. compact discs, DVDs and/or Blu-ray discs or future media that uses light (from a small laser) to read data off a removable, rotating disk. At least one such drive is commonly installed in most personal computers to allow them to play and/or record audio and video media and load and store data such as program installers. The floppy disk has been replaced by optical media due to its vastly greater capacity, e.g. 50,000 megabytes for a dual-layer blu-ray disc compared with 1.5 megabytes for a floppy (over 30,000 times as much).
- optical microscope — traditional magnifying instrument
- optical soundtrack — the final soundtrack on a motion picture, which appears as a band of black and white serrations along a strip of film to the left of the composite print. Light is shined through the serrations and is converted to audible sound.
- order room service — When a customer orders room service, they ask for meals or drinks to be brought to their room.
- organic solidarity — social cohesiveness that is based on division of labor and interdependence and is characteristic of complex, industrial societies.
- oriental cat's-eye — a chatoyant variety of chrysoberyl, used as a gem.
- oriental scops owl — any of a group of small owls having ear tufts and a whistling call, especially Otus scops (Old World scops owl) and O. sunia (Oriental scops owl)
- orientation course — induction into sth
- orthopedic surgery — corrective operation on bones or joints
- orthotungstic acid — an oxyacid acid of tungsten. Formula: H2WO4
- oscillographically — By means of oscillography.
- osteogenic sarcoma — osteosarcoma
- osteoradionecrosis — bone tissue death induced by radiation.
- ovariohysterectomy — Surgical removal of the ovaries and uterus.
- over-conscientious — governed by conscience; controlled by or done according to one's inner sense of what is right; principled: She's a conscientious judge, who does not let personal prejudices influence her decisions.
- overprotectiveness — unduly protective.
- overspecialization — excessive specialization, as in a field of study.
- pacinian corpuscle — (sometimes lowercase) a microscopic, onionlike body consisting of layers of connective tissue wrapped around a nerve ending, located in the deep layers of skin, tendons, etc., and functioning as a sensory receptor of pressure and vibration.
- pair of spectacles — a score of 0 in each innings of a match
- pairs championship — an event in a sport such as tennis or darts open to pairs of competitors
- par for the course — an equality in value or standing; a level of equality: The gains and the losses are on a par.
- parallel processor — (parallel) A computer with more than one central processing unit, used for parallel processing.
- parallel resonance — the resonance that results when circuit elements are connected with their inductance and capacitance in parallel, so that the impedance of the combination rises to a maximum at the resonant frequency
- passive vocabulary — all the words, collectively, that a person can understand
- pay one's respects — a particular, detail, or point (usually preceded by in): to differ in some respect.
- pectoral sandpiper — an American sandpiper, Calidris melanotos, the male of which, when courting, inflates its chest conspicuously.
- people's democracy — (in Communist ideology) a country or form of government in transition from bourgeois democracy to socialism. In this stage there is more than one class, the largest being the proletariat, led by the Communist Party, which is therefore the dominant power
- percussion flaking — a method of forming a flint tool by striking flakes from a stone core with another stone or a piece of bone or wood.
- percussion section — orchestra, group: drums, etc.
- percussion welding — a form of resistance welding in which the required pressure is provided by a hammerlike blow.
- perfect continuous — perfect progressive.
- performance artist — an artist that is involved in a theatrical presentation that incorporates various art forms, such as dance, sculpture, music, etc
- pernicious anaemia — Pernicious anaemia is a very severe blood disease.
- personal allowance — the amount of money you are allowed to earn each year without paying tax