15-letter words containing t, y, s, i, 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.
- observationally — of, relating to, or founded on observation, especially founded on observation rather than experiment.
- open university — higher education by correspondence
- oversensitivity — excessively or unduly sensitive.
- oyster toadfish — See under toadfish (def 1).
- pachymeningitis — inflammation of the dura mater of the brain and spinal cord
- packing density — a measure of the amount of data that can be held by unit length of a storage medium, such as magnetic tape
- 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.
- pearly nautilus — nautilus (def 1).
- periodic system — a system of classification of the elements based on the periodic law.
- pessimistically — pertaining to or characterized by pessimism or the tendency to expect only bad outcomes; gloomy; joyless; unhopeful: His pessimistic outlook kept him from applying for jobs for which he was perfectly qualified.
- petit serjeanty — serjeanty in which the tenant renders services of an impersonal nature to the king, as providing him annually with an implement of war, as a lance or bow.
- petty bourgeois — petit bourgeois
- 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.
- physiotherapist — physical therapy.
- plastic surgery — the branch of surgery dealing with the repair or replacement of malformed, injured, or lost organs or tissues of the body, chiefly by the transplant of living tissues.
- platyhelminthes — a phylum of worms having bilateral symmetry and a soft, usually flattened body, comprising the flatworms.
- play favourites — to display favouritism
- plunket society — the Royal New Zealand Society for the Health of Women and Children
- polycrystalline — (of a rock or metal) composed of aggregates of individual crystals.
- polyisobutylene — a polymer of isobutylene, used chiefly in the manufacture of synthetic rubber.
- postoperatively — occurring after a surgical operation.
- postsynchronize — to add sound, such as dubbing, to a film or video after shooting is completed
- prairie oysters — a raw egg, or the yolk of a raw egg, often mixed with seasonings, as salt, pepper, Worcestershire sauce, and used as a hangover remedy.
- presbyterianism — church government by presbyters or elders, equal in rank and organized into graded administrative courts.
- presbyterianize — to convert or be converted into Presbyterianism
- presidents' day — the third Monday in February, a legal holiday in the U.S., commemorating the birthdays of George Washington and Abraham Lincoln.
- presynaptically — in a presynaptic manner
- pretty pictures — (scientific computation) The next step up from numbers. Interesting graphical output from a program that may not have any sensible relationship to the system the program is intended to model, but good for showing to management.
- primary storage — main memory
- prismatic layer — the middle layer of the shell of certain mollusks, consisting chiefly of crystals of calcium carbonate.
- promissory note — a written promise to pay a specified sum of money to a designated person or to his or her order, or to the bearer of the note, at a fixed time or on demand.
- property rights — a legal right to or in a particular property.
- pseudo-military — of, for, or pertaining to the army or armed forces, often as distinguished from the navy: from civilian to military life.
- pseudomutuality — a relationship between two persons in which conflict of views or opinions is solved by simply ignoring it
- 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.
- psychotomimetic — (of a substance or drug) tending to produce symptoms like those of a psychosis; hallucinatory.
- pyrocrystalline — crystallized from a molten magma or highly heated solution.
- questionability — of doubtful propriety, honesty, morality, respectability, etc.: questionable activities; in questionable taste.
- radial symmetry — a basic body plan in which the organism can be divided into similar halves by passing a plane at any angle along a central axis, characteristic of sessile and bottom-dwelling animals, as the sea anemone and starfish.
- reality testing — the objective evaluation of situations, defective in certain psychoses, that enable one to distinguish between the external and the internal worlds and between the self and the nonself.
- registry office — a government office and depository in which records and civil registers are kept and civil marriages performed.