20-letter words containing o, r, e, c
- new democratic party — the Canadian social democratic party formed in 1961
- next program counter — (architecture) (nPC) A register in a CPU that contains the address of the instruction to be executed next.
- nickel tetracarbonyl — nickel carbonyl.
- nikkei stock average — an index of prices on the Tokyo Stock Exchange
- nonaccidental injury — damage, such as a bruise, burn, or fracture, deliberately inflicted on a child or an old person
- noncatalytic reactor — A noncatalytic reactor is a reactor in which no catalyst is used.
- nondirective therapy — client-centered therapy.
- nonrepeating decimal — a decimal representation of any irrational number, having the property that no sequence of digits is repeated ad infinitum.
- nonsense correlation — a correlation supported by data but having no basis in reality, as between incidence of the common cold and ownership of televisions
- normal zeeman effect — the dividing of a spectral line or lines as a result of placing a radiation source in a magnetic field. The division consists of three equally spaced lines (normal Zeeman effect) in systems for which the spin quantum number is zero, or of three or more unequally spaced lines (anomalous Zeeman effect) in systems for which the spin quantum number is not zero.
- north american plate — a major tectonic division of the earth's crust, comprising Greenland and the continent of North America and the suboceanic Labrador and North American Basins, and bounded on the east by the Mid-Atlantic Ridge, on the south by the Caribbean and South American Plates, and on the west by the San Andreas fault and Aleutian Trench.
- north canadian river — a river in NE New Mexico, E Texas, and E Oklahoma, flowing SE to the Canadian River. 760 miles (1223 km) long.
- north celestial pole — the point of intersection of the earth's extended axis and the northern half of the celestial sphere, lying about 1° from Polaris
- northern white cedar — any of several chiefly coniferous trees valued for their wood, especially Chamaecyparis thyoides, of the eastern U.S., or Thuja occidentalis (northern white cedar) of northeastern North America.
- norwegian forest cat — a breed of long-haired cat with a long bushy tail and a long mane
- not mince your words — If you say that someone does not mince their words, you mean that they speak in a forceful and direct way, especially when saying something unpleasant to someone.
- not worth the candle — not worth the price or trouble entailed (esp in the phrase the game's not worth the candle)
- object role modeling — (programming) (ORM) A conceptual modelling approach that pictures the application world as a set of objects that play roles (parts in relationships, which may be unary, binary or higher order). ORM provides both graphical and textual languages that enable models to be expressed naturally. For data modelling purposes, its graphical language is more expressive than ER or UML.
- objective relativism — the doctrine that knowledge of real objects is relative to the individual.
- occupation franchise — the right of a tenant to vote in national and local elections
- occupational therapy — a form of therapy in which patients are encouraged to engage in vocational tasks or expressive activities, as art or dance, usually in a social setting.
- ode on a grecian urn — a poem (1819) by Keats.
- off the beaten track — formed or shaped by blows; hammered: a dish of beaten brass.
- officer of the guard — an officer, acting under the officer of the day, who is responsible for the instruction, discipline, and performance of duty of the guard in a post, camp, or station. Abbreviation: OG, O.G.
- officer of the watch — the officer primarily responsible for the navigation of a ship, in the absence of the captain, during a certain watch.
- official secrets act — law: legislation protecting state secret
- olfactory anesthesia — absence or loss of the sense of smell.
- omega-minus particle — a baryon with strangeness −3, isotopic spin 0, and negative charge; predicted from the mathematics of the Eightfold Way and subsequently discovered. Symbol: Ω −.
- on course/off course — If a ship or aircraft is on course, it is travelling along the correct route. If it is off course, it is no longer travelling along the correct route.
- on the factory floor — in a factory; as a factory worker
- ontological argument — an a priori argument for the existence of God, asserting that as existence is a perfection, and as God is conceived of as the most perfect being, it follows that God must exist; originated by Anselm, later used by Duns Scotus, Descartes, and Leibniz.
- open learning centre — an establishment which provides further education on a flexible part-time basis
- operant conditioning — conditioning (def 1).
- operating conditions — Operating conditions are a set of conditions for operating a particular system or process.
- operational calculus — a method for solving a differential equation by treating differential operators as ordinary algebraic quantities, thus obtaining a simpler problem.
- optical mark reading — the reading of marks by an optical device whereby the information can be stored in machine-readable form
- order code processor — (processor) The ICL 2900, ICL 3900 and above term for "CPU".
- orthognathic surgery — the surgical correction of deformities or malpositions of the jaw.
- orthopaedic mattress — a specially firm mattress designed to help correct or ameliorate the discomfort of disorders of the spine and joints
- oscillating universe — a variant model of the closed universe in which the universe undergoes cycles of expansion and contraction.
- ousterhout's fallacy — Ousterhout's dichotomy
- over-intellectualize — to seek or consider the rational content or form of.
- overenthusiastically — With excessive enthusiasm.
- ovo-lacto vegetarian — a vegetarian who eats eggs and dairy products
- ovo-lacto-vegetarian — lacto-ovo-vegetarian.
- owner-occupied house — a house that is owned by the person who lives in it
- pale western cutworm — the larva of a noctuid moth, Agrotis orthogonia, of the western U.S. and Canada, that seriously damages grains, beets, potatoes, alfalfa, etc., by feeding underground on roots and stems.
- paper chromatography — the separation of mixtures into their constituents by preferential adsorption by a solid, as a column of silica (column chromatography) or a strip of filter paper (paper chromatography) or by a gel.
- paper qualifications — qualifications gained through official examinations, etc, rather than through experience
- para-dichlorobenzene — a white, crystalline, volatile, water-insoluble solid, C 6 H 4 Cl 2 , of the benzene series, having a penetrating odor: used chiefly as a moth repellent.