15-letter words containing h, i, s, e
- 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
- 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.
- 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.
- 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.
- 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).
- pachymeningitis — inflammation of the dura mater of the brain and spinal cord
- packet-switched — packet switching
- paleogeophysics — (used with a plural verb) inferred geophysical conditions or processes of designated periods of the geologic past.
- paphian goddess — Aphrodite, worshiped in Cyprus as the goddess of sexual love.
- parasympathetic — pertaining to that part of the autonomic nervous system consisting of nerves and ganglia that arise from the cranial and sacral regions and function in opposition to the sympathetic system, as in inhibiting heartbeat or contracting the pupil of the eye.
- parish magazine — a magazine containing news and articles of interest to the people of a particular parish church or the local area
- parish register — the register of the christenings, marriages, and burials in a parish.
- parthenogenesis — development of an egg without fertilization.
- pedagoguishness — the quality of being pedagoguish
- pepin the short — ("Pepin the Short") died a.d. 768, king of the Franks 751–768 (father of Charlemagne).
- peroxysulphuric — as in peroxysulphuric acid
- phase-switching — a technique used in radio interferometry in which the signal from one of the two antennae is periodically reversed in phase before being multiplied by the signal from the other antenna
- 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
- phenomenalistic — the doctrine that phenomena are the only objects of knowledge or the only form of reality.
- phenomenologies — the study of phenomena.
- phenomenologist — the study of phenomena.
- phlebosclerosis — sclerosis, or hardening, of the walls of veins.
- phloem necrosis — a disease of the American elm caused by a mycoplasmalike organism, characterized by yellowing and necrosis of the foliage and yellowish-brown discoloration of the phloem.
- phoenix islands — a group of eight coral islands in the central Pacific: administratively part of Kiribati. Area: 28 sq km (11 sq miles). The islands and surrounding waters form the Phoenix Islands Protected Area, the world's largest marine protected area. Area: 410 500 sq km (158 500 sq miles)
- phosphocreatine — a compound, C 4 H 1 0 O 5 N 3 P, found chiefly in muscle, formed by the enzymatic interaction of an organic phosphate and creatine, the breakdown of which provides energy for muscle contraction.
- phosphorylative — of or relating to phosphorylation
- photo-secession — an association of photographers founded in New York City in 1902 by Alfred Stieglitz and Edward Steichen that advocated the development and public recognition of photography as a fine art.
- photodissociate — to split or break up molecules as a result of the absorption of photons
- photoelasticity — the phenomenon of double refraction of polarized light by a transparent substance under elastic stress, used to measure strain in elastic, transparent materials.
- photomicroscope — a microscope having an illuminator and a camera mechanism for producing a photomicrograph.
- photosensitizer — a drug, food, or other chemical that increases sensitivity to light and other visible photons
- photosynthesize — to produce carbohydrates by photosynthesis: Plants with light green leaves don't photosynthesize as well as those with darker leaves.