15-letter words containing h, o, i, s
- 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 give a shit — to not care at all
- nothingarianism — Beliefs and practices of a nothingarian.
- nottinghamshire — a county in central England. 854 sq. mi. (2210 sq. km).
- notwithstanding — in spite of; without being opposed or prevented by: Notwithstanding a brilliant defense, he was found guilty. She went to the game anyway, doctor's orders notwithstanding.
- novokuibyshevsk — a city in the SW Russian Federation in Europe, SW of Kuibyshev.
- 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.
- of one's choice — The thing or person of your choice is the one that you choose.
- oil of the sick — holy oil used in the sacrament of extreme unction.
- old-established — established for a long time
- oligohydramnios — (medicine) A deficit of amniotic fluid in the amniotic sac, causing distinctive deformations of the foetus.
- oligosaccharide — any carbohydrate yielding few monosaccharides on hydrolysis, as two, three, or four.
- on a shoestring — If you do something or make something on a shoestring, you do it using very little money.
- on short notice — with little warning
- on the increase — growing, increasing
- one for his nob — the call made with this jack, scoring one point
- one-night stand — a single performance in one locale, as by a touring theatrical company, before moving on to the next engagement.
- onychocryptosis — a form of nail disease in which nails are ingrown
- ophthalmologist — a doctor of medicine specializing in ophthalmology.
- ophthalmoscopic — Of, pertaining to or using an ophthalmoscope.
- opisthognathous — having receding jaws.
- opposition hold — a particular way of holding rock in mountain-climbing
- orchestrational — Of or pertaining to orchestration.
- ordinary shares — British. a share of common stock.
- organized chaos — a complex situation or process that appears chaotic while having enough order to achieve progress or goals
- organochlorines — Plural form of organochlorine.
- ornithorhynchus — the platypus.
- orthophosphoric — (chemistry) Describing the ordinary form of phosphoric acid and its derivatives.
- orthopsychiatry — an approach to psychiatry concerned with the study and treatment of behavioral disorders, especially of young people.
- osteochondritis — inflammation of bone and cartilage.
- osteochondrosis — a disease of bone and cartilage growth centers in children that begins as a necrosis and is followed by regeneration or renewed calcification.
- out of sight of — not in sight
- outdoorsmanship — a person devoted to outdoor sports and recreational activities, as hiking, hunting, fishing, or camping.
- outside the box — a container, case, or receptacle, usually rectangular, of wood, metal, cardboard, etc., and often with a lid or removable cover.
- over-enthusiasm — absorbing or controlling possession of the mind by any interest or pursuit; lively interest: He shows marked enthusiasm for his studies.
- overemphasizing — Present participle of overemphasize.
- oyster toadfish — See under toadfish (def 1).
- pairs champions — competitors in or winners of a pairs championship
- paleogeophysics — (used with a plural verb) inferred geophysical conditions or processes of designated periods of the geologic past.
- panophthalmitis — the inflammation of all eye tissue
- panoramic sight — an artillery sight that can be rotated horizontally in a full circle.
- paphian goddess — Aphrodite, worshiped in Cyprus as the goddess of sexual love.
- parthenogenesis — development of an egg without fertilization.