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15-letter words containing m, o, r

  • nonmatriculated — not matriculated, not enrolled in an institution, esp a college or university
  • nonmelodramatic — Not melodramatic.
  • nonmetaphorical — not metaphorical; literal
  • nonmetropolitan — Not metropolitan.
  • nordic combined — a competition for Nordic skiers comprising ski jumping and cross-country skiing events, the winner having the highest combined score.
  • 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.
  • northcountryman — a native or inhabitant of the North of England
  • 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.
  • 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.
  • nothingarianism — Beliefs and practices of a nothingarian.
  • nottinghamshire — a county in central England. 854 sq. mi. (2210 sq. km).
  • number one wood — driver (def 4).
  • 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
  • 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.
  • ocean of storms — the largest of the dark plains (maria) on the surface of the moon, situated in the second and third quadrant
  • 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.
  • officer of arms — an officer with the duties of a herald, especially one charged with the devising, granting, or confirming of armorial bearings.
  • old father time — time personified
  • old high german — High German before 1100. Abbreviation: OHG.
  • old man's beard — fringe tree.
  • old-man's-beard — fringe tree.
  • oligohydramnios — (medicine) A deficit of amniotic fluid in the amniotic sac, causing distinctive deformations of the foetus.
  • oligomerisation — Alternative spelling of oligomerization.
  • oligomerization — (chemistry) The formation of an oligomer from a monomer.
  • oliver cromwell — Oliver, 1599–1658, English general, Puritan statesman, and Lord Protector of England, Scotland, and Ireland 1653–58.
  • omega-algebraic — In domain theory, a complete partial order is algebraic if every element is the lub of some chain of compact elements. If the set of compact elements is countable it is omega-algebraic. Usually written with a Greek letter omega (LaTeX \omega).
  • omnidirectional — sending or receiving signals in all directions: an omnidirectional microphone.
  • omnium gatherum — a miscellaneous collection.
  • omnium-gatherum — a miscellaneous collection.
  • on/off the mark — If something is off the mark, it is inaccurate or incorrect. If it is on the mark, it is accurate or correct.
  • oneirocriticism — the art of interpreting dreams.
  • open enrollment — open admissions.
  • open government — the doctrine that all government business should be open to regulation and scrutiny by the public
  • open your mouth — If you say that someone does not open their mouth, you are emphasizing that they never say anything at all.
  • 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.
  • orange chromide — an Asian cichlid fish, Etropus maculatus, with a brownish-orange spotted body
  • orange milkweed — butterfly weed (def 1).
  • orangeman's day — the 12th of July, celebrated by Protestants in Northern Ireland to commemorate the anniversary of the Battle of the Boyne (1690)
  • orangemen's day — July 12, an annual celebration in Northern Ireland and certain cities having a large Irish section, especially Liverpool, to mark both the victory of William III over James II at the Battle of the Boyne, July 1, 1690, and the Battle of Augbrim, July 12, 1690.
  • order-embedding — A function f : D -> C is order-embedding iff for all x, y in D, f(x) <= f(y) <=> x <= y. I.e. arguments and results compare similarly. A function which is order-embedding is monotonic and one-to-one and an injection. ("<=" is written in LaTeX as \sqsubseteq).
  • 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).
  • ordinary income — taxable income, as salary and wages, other than capital gains.
  • ordinary seaman — a seaman insufficiently skilled to be classified as an able-bodied seaman. Abbreviation: O.D., O.S., o.s.
  • orestes complex — Psychoanalysis. an unconscious desire of a son to kill his mother.
  • organic farming — farming with organic methods
  • organized crime — illegal activities co-ordinated by groups
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