15-letter words containing u, r, s, o
- neurohypophysis — See under pituitary gland.
- neurolinguistic — pertaining to neurolinguistics
- neurophysiology — the branch of physiology dealing with the functions of the nervous system.
- neuroplasticity — the capacity of the nervous system to develop new neuronal connections: research on neuroplasticity of the brain after injury.
- neuroprosthesis — A prosthesis used to improve the function of an impaired nervous system.
- neuropsychiatry — the branch of medicine dealing with diseases involving the mind and nervous system.
- neuropsychology — The study of the relationship between behavior, emotion, and cognition on the one hand, and brain function on the other.
- neuroscientific — the field of study encompassing the various scientific disciplines dealing with the structure, development, function, chemistry, pharmacology, and pathology of the nervous system.
- neuroscientists — Plural form of neuroscientist.
- non prosequitur — a judgment entered against the plaintiff in a suit when the plaintiff does not appear in court to prosecute it.
- non-carnivorous — flesh-eating: A dog is a carnivorous animal.
- non-putrescible — liable to become putrid.
- non-suppurative — suppurating; characterized by suppuration.
- nonconstruction — an activity not involving construction, esp in building
- nonconstructive — helping to improve; promoting further development or advancement (opposed to destructive): constructive criticism.
- noninstrumental — serving or acting as an instrument or means; useful; helpful.
- norman conquest — the conquest of England by the Normans, under William the Conqueror, in 1066.
- north australia — a former division of Australia; now part of the Northern Territory.
- north caucasian — a language family including all the Caucasian languages north of the Caucasian divide, as Kabardian and the Circassian language proper, and a few between the divide and the Black Sea, as Abkhazian.
- not be yourself — If you say that you are not yourself, you mean you are not feeling well.
- nuclear fission — fission (def 2).
- nuisance ground — a garbage dump.
- 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.
- obstacle course — a military training area having obstacles, as hurdles, ditches, and walls, that must be surmounted or crossed in succession.
- obstructionists — Plural form of obstructionist.
- obstructiveness — The characteristic of being obstructive.
- obtuse triangle — a triangle with one obtuse angle.
- odontorhynchous — (of birds) having toothlike ridges inside the beak
- odoriferousness — The quality of being odoriferous.
- off one's guard — to keep safe from harm or danger; protect; watch over: to guard the ruler.
- 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.
- on one's honour — on the pledge of one's word or good name
- on one's uppers — higher, as in place, position, pitch, or in a scale: the upper stories of a house; the upper register of a singer's voice.
- one's last hour — the time of one's death
- open university — higher education by correspondence
- opposite number — counterpart; equivalent: New members with an interest in folk art will find their opposite numbers in the association's directory.
- opprobriousness — The state or condition of being opprobrious.
- ordinal numbers — Also called ordinal numeral. any of the numbers that express degree, quality, or position in a series, as first, second, and third (distinguished from cardinal number).
- ordnance survey — mapmaking agency
- organomagnesium — pertaining to or noting an organic compound, especially an organic halide, containing magnesium linked to carbon.
- ornithorhynchus — the platypus.
- ostreiculturist — a person who breeds oysters
- outdoorsmanship — a person devoted to outdoor sports and recreational activities, as hiking, hunting, fishing, or camping.
- outer barrister — a barrister belonging to the outer bar.
- outside caliper — a caliper whose legs turn inward so that it can measure outside dimensions, as the diameter of a rod.
- outside forward — one of two attacking players who usually play on the far side of the field; wing.
- over-enthusiasm — absorbing or controlling possession of the mind by any interest or pursuit; lively interest: He shows marked enthusiasm for his studies.
- over-scrupulous — excessively scrupulous.
- over-solicitous — too solicitous: oversolicitous concerning one's health.