20-letter words containing e, a, r, t

new democratic party — the Canadian social democratic party formed in 1961
newcastle-under-lyme — a town in W central England, in Staffordshire. Pop: 74 427 (2001)
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.
nictitating membrane — a thin membrane, or inner or third eyelid, present in many animals, capable of being drawn across the eyeball, as for protection.
night storage heater — a heater or radiator that stores heat at night-time because electricity is cheaper
nikkei stock average — an index of prices on the Tokyo Stock Exchange
non-volatile storage — (storage) (NVS, persistent storage, memory) A term describing a storage device whose contents are preserved when its power is off. Storage using magnetic media (e.g. magnetic disks, magnetic tape or bubble memory) is normally non-volatile by nature whereas semiconductor memories (static RAM and especially dynamic RAM) are normally volatile but can be made into non-volatile storage by having a (rechargable) battery permanently connected. Other examples of non-volatile storage are EEPROM, CD-ROM, paper tape and punched cards.
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
north temperate zone — the part of the earth's surface between the tropic of Cancer and the Arctic Circle.
northern leaf blight — a disease of corn caused by the fungus Exsherohilum turcicum, characterized by elongate tan-gray elliptical spots with subsequent blighting and necrosis of leaves.
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 worth the candle — not worth the price or trouble entailed (esp in the phrase the game's not worth the candle)
notre dame mountains — a mountain range in E Quebec, Canada, an extension of the Green Mountains in Vermont and a portion of the Appalachian Mountains: about 500 miles (800 km) long, rising about 2000 feet (610 meters).
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.
off the beaten track — formed or shaped by blows; hammered: a dish of beaten brass.
off-the-job training — training which is carried out away from your normal place of work
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 (or off) the air — that is (or is not) broadcasting or being broadcast
on o's best behavior — If someone is on their best behavior, they are trying very hard to behave well.
on the drawing board — in the planning stage
on the factory floor — in a factory; as a factory worker
on the starboard bow — within 45 degrees to the starboard of straight ahead
one's heart's desire — If you say that someone or something is your heart's desire, you mean that you want that person or thing very much.
one's spiritual home — Your spiritual home is the place where you feel that you belong, usually because your ideas or attitudes are the same as those of the people who live there.
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.
operation barbarossa — the codename for Hitler's invasion (1941) of Russia
operational calculus — a method for solving a differential equation by treating differential operators as ordinary algebraic quantities, thus obtaining a simpler problem.
operational database — (database) A database containing up-to-date, modifiable data, in contrast to a decision support database.
operational strategy — a plan or set of plans for successfully running a business, etc
operator overloading — overloading
ophthalmodynamometer — a device for determining the nearest point of ocular convergence.

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