15-letter words containing i, n, h, o, t

not lift a hand — to do nothing; not even try
not turn a hair — any of the numerous fine, usually cylindrical, keratinous filaments growing from the skin of humans and animals; a pilus.
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.
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.
omnium gatherum — a miscellaneous collection.
omnium-gatherum — a miscellaneous collection.
on a shoestring — If you do something or make something on a shoestring, you do it using very little money.
on heat/in heat — When a female animal is on heat in British English, or in heat in American English, she is in a state where she is ready to mate with a male animal, as this will probably result in her becoming pregnant.
on short notice — with little warning
on the increase — growing, increasing
on the point of — a sharp or tapering end, as of a dagger.
on the qui vive — on the qui vive, on the alert; watchful: Special guards were on the qui vive for trespassers.
on the trail of — If you are on the trail of a person or thing, you are trying hard to find them or find out about them.
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
opisthognathous — having receding jaws.
opposition hold — a particular way of holding rock in mountain-climbing
orchestrational — Of or pertaining to orchestration.
ornithodelphian — of or relating to mammals of the class Ornithodelphia
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.
orthodontically — from an orthodontic point of view
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.
otaheite orange — a small citrus bush, Citrus limonia otaitensis, having fragrant flowers and small orange fruit, often cultivated as a houseplant.
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.
overachievement — to perform, especially academically, above the potential indicated by tests of one's mental ability or aptitude.
palaeoanthropic — relating to palaeoanthropology
paleolithic man — any of the prehistoric populations of humans, as the Cro-Magnon, living in the late Pliocene and the Pleistocene epochs.
panophthalmitis — the inflammation of all eye tissue
panoramic sight — an artillery sight that can be rotated horizontally in a full circle.
parthenogenesis — development of an egg without fertilization.
parthenogenetic — development of an egg without fertilization.
patagonian hare — a burrowing, gray, long-eared and long-legged cavy of the genus Dolichotis, native to South America.
payment holiday — a break taken from paying ( a debt etc) back
pentaerythritol — a white, crystalline, water-soluble powder, C 5 H 1 2 O 4 , used chiefly in the manufacture of alkyd resins, varnishes, plasticizers, and explosives.
pepin the short — ("Pepin the Short") died a.d. 768, king of the Franks 751–768 (father of Charlemagne).
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.
phenakistoscope — an early form of a zoetrope in which figures are depicted in different poses around the edge of a disc. When the disc is spun, and the figures observed through the apertures around the edge of the disc, they appear to be moving

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