15-letter words containing t, o, r, s, i
- nonaristocratic — lacking aristocratic qualities, not refined or polished
- nonastronomical — not astronomical
- noncatastrophic — of the nature of a catastrophe, or disastrous event; calamitous: a catastrophic failure of the dam.
- nonconformities — Plural form of nonconformity.
- nonconservation — A failure to conserve.
- nonconservative — Not conservative.
- nonconstruction — an activity not involving construction, esp in building
- nonconstructive — helping to improve; promoting further development or advancement (opposed to destructive): constructive criticism.
- nondiscriminate — Not discriminate.
- noninstrumental — serving or acting as an instrument or means; useful; helpful.
- nonintersecting — Not intersecting.
- nonintersection — Lack of intersection; failure to intersect.
- nonpartisanship — The quality of not being partisan, of remaining politically independent.
- nonprescription — (of drugs, medication, etc.) legally available for purchase without a doctor's prescription; over-the-counter.
- nonprescriptive — that prescribes; giving directions or injunctions: a prescriptive letter from an anxious father.
- nonpsychiatrist — a person who is not a psychiatrist
- nonrelativistic — not concerned with or involving the theory of relativity
- nonstandardized — Unstandardized.
- nonstationarity — The condition of being nonstationary.
- nonstereoscopic — Not stereoscopic.
- 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.
- north highlands — a town in central California, near Sacramento.
- north kingstown — a town in S central Rhode Island.
- north yorkshire — a county in NE England. 3208 sq. mi. (8309 sq. km).
- northern lights — aurora borealis.
- not necessarily — If you reply 'Not necessarily', you mean that what has just been said or suggested may not be true.
- nothingarianism — Beliefs and practices of a nothingarian.
- nottinghamshire — a county in central England. 854 sq. mi. (2210 sq. km).
- 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.
- objective prism — a large prism placed in front of the objective lens or mirror of a telescope, allowing the simultaneous acquisition of the spectra of many stars.
- 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.
- obstructionists — Plural form of obstructionist.
- obstructiveness — The characteristic of being obstructive.
- obtuse triangle — a triangle with one obtuse angle.
- official strike — a collective stoppage of work by part or all of the workforce of an organization with the approval of the trade union concerned. The stoppage may be accompanied by the payment of strike pay by the trade union concerned
- offset printing — offset (def 6).
- oligomerisation — Alternative spelling of oligomerization.
- on a shoestring — If you do something or make something on a shoestring, you do it using very little money.
- on prescription — If a medicine is available on prescription, you can only get it from a chemist or pharmacist if a doctor gives you a prescription for it.
- on short notice — with little warning
- on the increase — growing, increasing
- oneirocriticism — the art of interpreting dreams.
- onychocryptosis — a form of nail disease in which nails are ingrown
- open university — higher education by correspondence
- operationalised — Simple past tense and past participle of operationalise.
- operations room — a room from which all the operations of a military, police, or other disciplined activity are controlled
- opposite number — counterpart; equivalent: New members with an interest in folk art will find their opposite numbers in the association's directory.
- opposite prompt — the offstage area to the right as one faces the audience. Abbreviation: O.P.