15-letter words containing s, h, r
- 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 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.
- nothingarianism — Beliefs and practices of a nothingarian.
- nottinghamshire — a county in central England. 854 sq. mi. (2210 sq. km).
- nuclear physics — the branch of physics that deals with the behavior, structure, and component parts of atomic nuclei.
- 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.
- odontorhynchous — (of birds) having toothlike ridges inside the beak
- 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.
- oligohydramnios — (medicine) A deficit of amniotic fluid in the amniotic sac, causing distinctive deformations of the foetus.
- oligosaccharide — any carbohydrate yielding few monosaccharides on hydrolysis, as two, three, or four.
- on a shoestring — If you do something or make something on a shoestring, you do it using very little money.
- on one's honour — on the pledge of one's word or good name
- on short notice — with little warning
- on the decrease — decreasing
- on the increase — growing, increasing
- one for his nob — the call made with this jack, scoring one point
- one's last hour — the time of one's death
- onychocryptosis — a form of nail disease in which nails are ingrown
- orchestrational — Of or pertaining to orchestration.
- ordinary shares — British. a share of common stock.
- organized chaos — a complex situation or process that appears chaotic while having enough order to achieve progress or goals
- organochlorines — Plural form of organochlorine.
- organophosphate — Biochemistry. any of a variety of organic compounds that contain phosphorus and often have intense neurotoxic activity: originally developed as nerve gases, now widely used as insecticides and fire retardants.
- ornithorhynchus — the platypus.
- orthophosphoric — (chemistry) Describing the ordinary form of phosphoric acid and its derivatives.
- orthopsychiatry — an approach to psychiatry concerned with the study and treatment of behavioral disorders, especially of young people.
- osteochondritis — inflammation of bone and cartilage.
- osteochondrosis — a disease of bone and cartilage growth centers in children that begins as a necrosis and is followed by regeneration or renewed calcification.
- outdoorsmanship — a person devoted to outdoor sports and recreational activities, as hiking, hunting, fishing, or camping.
- over one's head — the upper part of the body in humans, joined to the trunk by the neck, containing the brain, eyes, ears, nose, and mouth.
- over-enthusiasm — absorbing or controlling possession of the mind by any interest or pursuit; lively interest: He shows marked enthusiasm for his studies.
- overemphasizing — Present participle of overemphasize.
- overorchestrate — to compose or arrange excessively
- overthrust belt — an elongate area in which thick rock layers have been pushed over one another by compressional forces within the earth's crust.
- oyster mushroom — oyster cap.
- oyster toadfish — See under toadfish (def 1).
- pairs champions — competitors in or winners of a pairs championship
- panoramic sight — an artillery sight that can be rotated horizontally in a full circle.
- parasympathetic — pertaining to that part of the autonomic nervous system consisting of nerves and ganglia that arise from the cranial and sacral regions and function in opposition to the sympathetic system, as in inhibiting heartbeat or contracting the pupil of the eye.
- parish magazine — a magazine containing news and articles of interest to the people of a particular parish church or the local area
- parish register — the register of the christenings, marriages, and burials in a parish.
- parmesan cheese — of or from Parma, in northern Italy.
- parthenogenesis — development of an egg without fertilization.