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18-letter words containing t, y, p, e

  • phytohemagglutinin — a lectin, obtained from the red kidney bean, that binds to the membranes of T cells and stimulates metabolic activity, cell division, etc.
  • piperonyl butoxide — a light-brown liquid, C 1 9 H 3 0 O 5 , used chiefly as a synergist in certain insecticides.
  • plane trigonometry — the branch of trigonometry dealing with plane triangles.
  • play cat and mouse — Also called cat and rat. a children's game in which players in a circle keep a player from moving into or out of the circle and permit a second player to move into or out of the circle to escape the pursuing first player.
  • play the race card — to introduce the subject of race into a public discussion, esp to gain a strategic advantage
  • pneumatic conveyor — a tube through which powdered or granular material, such as cement, grain, etc is transported by a flow of air
  • point set topology — topology (def 2).
  • politically-minded — (of a person or group of people) interested in the way power is achieved and used in a country or society (through government, policy-making, etc)
  • polynesian tattler — a sandpiper, H. incanus, native to the Pacific coastal regions
  • polystyrene cement — a purpose-made adhesive for fixing rigid polystyrene
  • population density — ratio: inhabitants to area
  • positively charged — having a positive charge
  • post-revolutionary — of, pertaining to, characterized by, or of the nature of a revolution, or a sudden, complete, or marked change: a revolutionary junta.
  • postviral syndrome — debilitating condition occurring as a sequel to viral illness
  • potassium myronate — sinigrin.
  • preparatory school — a private or parochial secondary school, especially one boarding its students and providing a college-preparatory education.
  • presentation layer — (networking)   The second highest layer (layer 6) in the OSI seven layer model. Performs functions such as text compression, code or format conversion to try to smooth out differences between hosts. Allows incompatible processes in the application layer to communicate via the session layer. Documents: ITU Rec. X.226 (ISO 8823), ITU Rec. X.216 (ISO 8822).
  • priority interrupt — (jargon)   Any stimulus compelling enough to yank one right out of hack mode. Classically used to describe being dragged away by an SO for immediate sex, but may also refer to more mundane interruptions such as a fire alarm going off in the near vicinity. Also called an NMI (non-maskable interrupt), especially in PC-land.
  • priority inversion — (parallel)   The state of a concurrent system where a high priority task is waiting for a low priority task which is waiting for a medium priority task. The system may become unstable and crash under these circumstances. In an operating system that uses multiple tasks, each task (or context) may be given a priority. These priorities help the scheduler decide which task to run next. Consider tasks, L, M, and H, with priorities Low, Medium, and High. M is running and H is blocked waiting for some resource that is held by L. So long as any task with a priority higher than L is runable, it will prevent task L, and thus task H, from running. Priority inversion is generally considered either as a high-level design failure or an implementation issue to be taken into account depending on who is talking. Most operating systems have methods in place to prevent or take inversion into account. Priority inheritance is one method. The most public instance of priority inversion is the repeated 'fail-safe' rebooting of the Mars Pathfinder. base station ('Sagan Memorial Station').
  • probability theory — the theory of analyzing and making statements concerning the probability of the occurrence of uncertain events. Compare probability (def 4).
  • processionary moth — a moth of the family Thaumetopoeidae, esp the oak processionary moth (Thaumetopoea processionea), the larvae of which leave the communal shelter nightly for food in a V-shaped procession
  • product life cycle — the four stages (introduction, growth, maturity, and decline) into one of which the sales of a product fall during its market life
  • programme of study — the prescribed syllabus that pupils must be taught at each key stage in the National Curriculum
  • property developer — person: deals in real estate
  • property insurance — insurance coverage for land and housing
  • proprietary colony — any of certain colonies, as Maryland and Pennsylvania, that were granted to an individual or group by the British crown and that were granted full rights of self-government.
  • proprietary rights — rights of ownership
  • protective custody — detention of a person by the police solely as protection against a possible attack or reprisal by someone.
  • protein deficiency — a lack or insuffiency of protein
  • pseudo-symptomatic — pertaining to a symptom or symptoms.
  • psychogalvanometer — a type of galvanometer for detecting and measuring psychogalvanic currents.
  • psychotechnologist — a specialist in psychotechnology
  • psychotherapeutics — psychotherapy.
  • pulp canal therapy — endodontics.
  • pyramus and thisbe — (in Greek legend) two lovers of Babylon: Pyramus, wrongly supposing Thisbe to be dead, killed himself and she, encountering him in his death throes, did the same
  • quasi-metaphysical — pertaining to or of the nature of metaphysics.
  • raman spectroscopy — a form of spectroscopy which uses the Raman effect for studying molecules
  • rapid eye movement — rapidly shifting, continuous movements of the eyes beneath closed lids during the stage of sleep characterized by dreaming.
  • recovery operation — the process of locating and retrieving bodies, esp following an explosion or natural disaster
  • redundancy payment — a sum of money given by an employer to an employee who has been made redundant: usually calculated on the basis of the employee's rate of pay and length of service
  • reentering polygon — a polygon having one or more reentering angles.
  • registered company — a company which has officially registered its business
  • repayment mortgage — a mortgage that you pay back in monthly repayments which consist of the accrued interest in addition to the original amount borrowed
  • repayment schedule — a document detailing the specific terms of a borrower's loan, such as monthly payment, interest rate, due dates etc
  • reporters' gallery — an area in parliament reserved for journalists and reporters
  • respiratory arrest — cessation of breathing
  • respiratory system — the system by which oxygen is taken into the body and an exchange of oxygen and carbon dioxide takes place; in mammals the system includes the nasal passages, pharynx, trachea, bronchi, and lungs.
  • root canal therapy — endodontics.
  • safety-deposit box — a lockable metal box or drawer, especially in a bank vault, used for safely storing valuable papers, jewelry, etc.
  • saskatchewan party — (in Canada) a Saskatchewan political party formed by former members of the provincial Progressive Conservative and Liberal Parties
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