15-letter words containing u, n, i, r, t
- nonreproductive — Not able to reproduce; sterile.
- 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.
- northern paiute — a member of an American Indian people of Nevada, Oregon, and California, allied to the Paiute.
- not turn a hair — any of the numerous fine, usually cylindrical, keratinous filaments growing from the skin of humans and animals; a pilus.
- nuclear testing — the process of carrying out a test on a nuclear weapon to determine effectiveness, etc
- nuke the fridge — (of a film, etc.) to lose credibility following a particularly ill-judged scene or plot development
- nursing studies — the study of nursing
- nutcracker chin — a strong-looking chin
- nutmeg geranium — a southern African plant, Pelargonium fragrans, of the geranium family, having hairy leaves with scalloped margins and nutmeg-scented clusters of white flowers, of which the two upper petals are veined deep pink.
- 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.
- obituary column — the division of a publication reserved for obituaries
- obstructionists — Plural form of obstructionist.
- obstructiveness — The characteristic of being obstructive.
- obtuse triangle — a triangle with one obtuse angle.
- 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.
- omnium gatherum — a miscellaneous collection.
- omnium-gatherum — a miscellaneous collection.
- 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.
- ornithorhynchus — the platypus.
- ortho-toluidine — Chemistry. a light-yellow, very slightly water-soluble liquid, C 7 H 9 N, the ortho isomer of toluidine: used in the manufacture of dyes, saccharin, and other organic compounds, and in textile printing processes.
- out of thin air — suddenly and unexpectedly
- out of training — become unfit
- outdoorsmanship — a person devoted to outdoor sports and recreational activities, as hiking, hunting, fishing, or camping.
- outline drawing — a drawing consisting only of external lines
- outward-looking — looking beyond oneself; open-minded and reaching out to other people, organizations, etc
- over-enthusiasm — absorbing or controlling possession of the mind by any interest or pursuit; lively interest: He shows marked enthusiasm for his studies.
- over-population — to fill with an excessive number of people, straining available resources and facilities: Expanding industry has overpopulated the western suburbs.
- over-regulation — a law, rule, or other order prescribed by authority, especially to regulate conduct.
- overcommunicate — to communicate excessively
- overconsumption — the act of consuming, as by use, decay, or destruction.
- overcultivation — the act or art of cultivating.
- overexpenditure — the act of expending something, especially funds; disbursement; consumption.
- overspeculation — the contemplation or consideration of some subject: to engage in speculation on humanity's ultimate destiny.
- overstimulation — to rouse to action or effort, as by encouragement or pressure; spur on; incite: to stimulate his interest in mathematics.
- overutilization — to put to use; turn to profitable account: to utilize a stream to power a mill.
- ozark mountains — an eroded plateau in S Missouri, N Arkansas, and NE Oklahoma. Area: about 130 000 sq km (50 000 sq miles)
- pair production — Physics. the simultaneous creation of a particle and its antiparticle by a nucleus or particle in an excited state, as when a photon is absorbed.
- paralinguistics — the study of paralanguage.
- partial denture — an artificial replacement of one or several of the teeth (partial denture) or all of the teeth (full denture) of either or both jaws; dental prosthesis.
- patio furniture — furniture in an area adjoining a house, esp one that is paved and used for outdoor activities
- peak production — the maximum production
- pearly nautilus — nautilus (def 1).
- penal servitude — imprisonment together with hard labor.
- percussion tool — a power driven tool which operates by striking rapid blows: the power may be electricity or compressed air
- perforating gun — A perforating gun is a device used to make holes in oil and gas wells in preparation for production.
- perfunctoriness — performed merely as a routine duty; hasty and superficial: perfunctory courtesy.
- phantom circuit — a circuit derived from two suitably arranged pairs of wires, each pair being a circuit (side circuit) and also acting as one half of an additional derived circuit, the entire system providing the capabilities of three circuits while requiring wires for only two.