15-letter words containing h, o, n, u
- non-exhaustible — to drain of strength or energy, wear out, or fatigue greatly, as a person: I have exhausted myself working.
- non-homogeneous — composed of parts or elements that are all of the same kind; not heterogeneous: a homogeneous population.
- nonarchitecture — a building not designed according to accepted modes of architecture
- 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 vancouver — a city in SW British Columbia, in SW Canada.
- northcountryman — a native or inhabitant of the North of England
- northern paiute — a member of an American Indian people of Nevada, Oregon, and California, allied to the Paiute.
- northern parula — any of several American wood warblers of the genus Parula, especially P. americana (northern parula) having bluish plumage with a yellow throat and breast.
- not turn a hair — any of the numerous fine, usually cylindrical, keratinous filaments growing from the skin of humans and animals; a pilus.
- novokuibyshevsk — a city in the SW Russian Federation in Europe, SW of Kuibyshev.
- nucleophilicity — (uncountable) The condition of being nucleophilic.
- nucleosynthesis — the formation of new atomic nuclei by nuclear reactions, thought to occur in the interiors of stars and in the early stages of development of the universe.
- nucleosynthetic — Of or pertaining to nucleosynthesis.
- null hypothesis — (in the statistical testing of a hypothesis) the hypothesis to be tested.
- 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.
- occulting light — a beacon having a light covered briefly at regular intervals.
- ocean greyhound — a fast ship, esp a liner
- odontorhynchous — (of birds) having toothlike ridges inside the beak
- off one's chump — insane; crazy
- 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.
- omnium gatherum — a miscellaneous collection.
- omnium-gatherum — a miscellaneous collection.
- on o's haunches — If you get down on your haunches, you lower yourself towards the ground so that your legs are bent under you and you are balancing on your feet.
- on one's honour — on the pledge of one's word or good name
- on the qui vive — on the qui vive, on the alert; watchful: Special guards were on the qui vive for trespassers.
- one's last hour — the time of one's death
- one-two (punch) — a sequence of two quick punches, esp. a jab with the left hand followed at once by a hard blow with the right
- open your mouth — If you say that someone does not open their mouth, you are emphasizing that they never say anything at all.
- openmouthedness — the state or condition of being filled with amazement and wonder
- opisthognathous — having receding jaws.
- 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 in the cold — having a relatively low temperature; having little or no warmth: cold water; a cold day.
- out in the open — knowledge: public
- out of thin air — suddenly and unexpectedly
- outdoorsmanship — a person devoted to outdoor sports and recreational activities, as hiking, hunting, fishing, or camping.
- over-enthusiasm — absorbing or controlling possession of the mind by any interest or pursuit; lively interest: He shows marked enthusiasm for his studies.
- oxyphenbutazone — an anti-inflammatory treatment for arthritis or bursitis
- pedagoguishness — the quality of being pedagoguish
- 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.
- pheasant coucal — a brown and black, red-eyed Australian bird, Centropus phasianinus, with a pheasantlike tail.
- phenylene group — any of three bivalent, isomeric groups having the formula –C 6 H 4 –, derived from benzene by the removal of two hydrogen atoms.
- phenylketonuria — an inherited disease due to faulty metabolism of phenylalanine, characterized by phenylketones in the urine and usually first noted by signs of mental retardation in infancy.
- phenylketonuric — an inherited disease due to faulty metabolism of phenylalanine, characterized by phenylketones in the urine and usually first noted by signs of mental retardation in infancy.
- phonautographic — relating to a phonautograph or a piece of equipment that records sound visually by detecting the sound waves and indicating them on a graph
- photoconducting — of or relating to photoconduction
- photoconduction — of, relating to, or exhibiting photoconductivity.
- photoconductive — of, relating to, or exhibiting photoconductivity.
- photojournalism — journalism in which photography dominates written copy, as in certain magazines.