15-letter words containing e, y, t, h
- 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.
- off the trolley — Describes the behaviour of a program that malfunctions and goes catatonic, but doesn't actually crash or abort. See glitch, bug, deep space.
- on the contrary — opposite in nature or character; diametrically or mutually opposed: contrary to fact; contrary propositions.
- one of the boys — If a man is described as one of the boys, he is accepted by a group of male friends who do things that are thought of as typically masculine.
- open your mouth — If you say that someone does not open their mouth, you are emphasizing that they never say anything at all.
- orthokeratology — a technique for correcting refractive errors in vision by changing the shape of the cornea with the temporary use of progressively flatter hard contact lenses.
- orthopaedically — in an orthopaedic manner
- oxyphenbutazone — an anti-inflammatory treatment for arthritis or bursitis
- oyster mushroom — oyster cap.
- oyster toadfish — See under toadfish (def 1).
- pachymeningitis — inflammation of the dura mater of the brain and spinal cord
- palaeontography — the branch of palaeontology concerned with the description of fossils
- palaeopathology — the study of diseases of ancient man and fossil animals
- palaeophytology — the study of ancient botany
- paracetaldehyde — paraldehyde.
- 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.
- parenthetically — of, pertaining to, noting, or of the nature of a parenthesis: several unnecessary parenthetic remarks.
- 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.
- pharmacotherapy — the treatment of disease through the administration of drugs.
- phenyl valerate — a colorless, slightly water-soluble liquid, C 1 1 H 1 4 O 2 , used chiefly in flavoring and perfumery.
- 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.
- phosphorylative — of or relating to phosphorylation
- photoelasticity — the phenomenon of double refraction of polarized light by a transparent substance under elastic stress, used to measure strain in elastic, transparent materials.
- photosynthesize — to produce carbohydrates by photosynthesis: Plants with light green leaves don't photosynthesize as well as those with darker leaves.
- phototelegraphy — facsimile (def 2a).
- phototypesetter — a machine for phototypesetting
- physiotherapist — physical therapy.
- phytochemically — in a phytochemical manner
- phytoflagellate — any microscopic flagellate that is photosynthetic.
- phytopathogenic — of, possessing the properties of, or relating to a phytopathogen
- pied flycatcher — a small black and white migratory bird of Europe and western Asia, Ficedula hypoleuca
- platyhelminthes — a phylum of worms having bilateral symmetry and a soft, usually flattened body, comprising the flatworms.
- play the market — to speculate on a stock exchange
- plethysmography — the tracking of changes measured in bodily volume
- pneumatotherapy — the use of compressed or rarefied air in treating disease.
- polychlorinated — having multiple chlorine atoms
- polyphemus moth — a large, yellowish-brown American silkworm moth, Antheraea polyphemus, having a prominent eyespot on each hind wing and feeding on cherry, apple, and other trees.
- postsynchronize — to add sound, such as dubbing, to a film or video after shooting is completed
- primary feather — any of the flight feathers growing from the manus of a bird's wing
- primary teacher — a teacher in a primary school
- property rights — a legal right to or in a particular property.
- psychochemistry — the treatment of mental illnesses by drugs
- psychogeriatric — the psychology of old age.
- psychosynthesis — a theoretical effort to reconcile components of the unconscious, including dreams, with the rest of the personality.
- psychotherapist — the treatment of psychological disorders or maladjustments by a professional technique, as psychoanalysis, group therapy, or behavioral therapy.