15-letter words containing e, n, r, o
- nordic combined — a competition for Nordic skiers comprising ski jumping and cross-country skiing events, the winner having the highest combined score.
- norethandrolone — An anabolic steroid.
- norfolk terrier — one of an English breed of small short-legged hunting terriers having a straight, wiry, red, black and tan, or grizzle coat, and dropped ears that distinguish it from the Norwich terrier.
- normally-closed — Normally-closed switch contacts are in a closed state at rest.
- norman conquest — the conquest of England by the Normans, under William the Conqueror, in 1066.
- north bay shore — a city on S Long Island, in SE New York.
- north las vegas — a city in S Nevada.
- north vancouver — a city in SW British Columbia, in SW Canada.
- north yorkshire — a county in NE England. 3208 sq. mi. (8309 sq. km).
- north-northeast — the point on the compass midway between north and northeast. Abbreviation: NNE.
- north-northwest — the point on the compass midway between north and northwest. Abbreviation: NNW.
- northeast storm — a cyclonic storm that moves northeastward within several hundred miles of the eastern coast of the U.S. and Canada, particularly in fall and winter, its often strong northeast winds causing high seas and coastal damage and bearing rain or snow.
- northeasterners — Plural form of northeasterner.
- northeastwardly — Towards the northeast.
- northern lights — aurora borealis.
- northern oriole — an oriole, Icterus galbula, of North America, with highly distinctive eastern and western subspecies that interbreed in the Great Plains region.
- northern paiute — a member of an American Indian people of Nevada, Oregon, and California, allied to the Paiute.
- northern parula — any of several American wood warblers of the genus Parula, especially P. americana (northern parula) having bluish plumage with a yellow throat and breast.
- northern sennet — any of several small barracudas, as Sphyraena borealis (northern sennet) ranging along the eastern coast of North and Central America.
- northwestwardly — Towards the northwest.
- norwich terrier — one of an English breed of small, short-legged terriers having a straight, wiry, red, gray, or black-and-tan coat, and erect ears that distinguish it from the Norfolk terrier.
- not be yourself — If you say that you are not yourself, you mean you are not feeling well.
- not before time — If you say not before time after a statement has been made about something that has been done, you are saying in an emphatic way that you think it should have been done sooner.
- not care a fuck — not to care at all
- not in the race — given or having no chance
- not necessarily — If you reply 'Not necessarily', you mean that what has just been said or suggested may not be true.
- nottinghamshire — a county in central England. 854 sq. mi. (2210 sq. km).
- nuclear fission — fission (def 2).
- nuclear reactor — reactor (def 4).
- nuclear-powered — powered by nuclear energy
- nuisance ground — a garbage dump.
- number one wood — driver (def 4).
- nutty professor — a professor or academic person who is eccentric or slightly crazy or unusual
- nyquist theorem — (communications) A theorem stating that when an analogue waveform is digitised, only the frequencies in the waveform below half the sampling frequency will be recorded. In order to reconstruct (interpolate) a signal from a sequence of samples, sufficient samples must be recorded to capture the peaks and troughs of the original waveform. If a waveform is sampled at less than twice its frequency the reconstructed waveform will effectively contribute only noise. This phenomenon is called "aliasing" (the high frequencies are "under an alias"). This is why the best digital audio is sampled at 44,000 Hz - twice the average upper limit of human hearing. The Nyquist Theorem is not specific to digitised signals (represented by discrete amplitude levels) but applies to any sampled signal (represented by discrete time values), not just sound.
- obedience trial — a competitive event at which a dog can progress toward a degree in obedience by demonstrating its ability to follow a prescribed series of commands.
- object-oriented — pertaining to or denoting a system, programming language, etc., that supports the use of objects, as an entire image, a routine, or a data structure.
- observation car — a railroad passenger car having a lounge or platform from which the scenery can be viewed.
- observationally — of, relating to, or founded on observation, especially founded on observation rather than experiment.
- obstructiveness — The characteristic of being obstructive.
- obtuse triangle — a triangle with one obtuse angle.
- ocean greyhound — a fast ship, esp a liner
- ocean of storms — the largest of the dark plains (maria) on the surface of the moon, situated in the second and third quadrant
- octanitrocubane — (organic compound) A high explosive derived from cubane.
- odd permutation — a permutation of a set of n elements, x 1 , x 2 , …, xn, which permutes the product of all differences of the form (xi – xj), where i is less than j, into the negative of the product.
- odoriferousness — The quality of being odoriferous.
- off one's guard — to keep safe from harm or danger; protect; watch over: to guard the ruler.
- offset printing — offset (def 6).
- oil of lavender — an essential oil distilled from lavender flowers, especially Lavandula angustifolia and L. stoechas, and used in perfumery.
- oil tanker pier — An oil tanker pier is a structure over water where oil tankers can stop and load or unload.
- okhotsk current — a cold ocean current flowing SW from the Bering Sea, E of the Kurile Islands, along the E coast of Japan where it meets the Japan Current.