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17-letter words containing p, r, u

  • huygens principle — the principle that all points on a wave front of light are sources of secondary waves and that surfaces tangential to these waves define the position of the wave front at any point in time.
  • hydrogen sulphide — Chemistry
  • hydrotherapeutics — hydrotherapy.
  • hyperintellectual — appealing to or engaging the intellect: intellectual pursuits.
  • hypochlorous acid — a weak, unstable acid, HOCl, existing only in solution and in the form of its salts, used as a bleaching agent and disinfectant.
  • i beg your pardon — You say 'Pardon?' or 'I beg your pardon?' or, in American English, 'Pardon me?' when you want someone to repeat what they have just said because you have not heard or understood it.
  • iberian peninsula — Also called Iberian Peninsula. a peninsula in SW Europe, comprising Spain and Portugal.
  • ice-cream parlour — a place where people go to eat ice cream
  • illegal procedure — a penalty assessed against the offensive team for a technical rules violation, as in assuming an illegal formation.
  • immunocompromised — having an impaired or compromised immune response; immunodeficient.
  • immunosuppressant — (pharmacology) Capable of immunosuppression, immunosuppressive.
  • immunosuppression — the inhibition of the normal immune response because of disease, the administration of drugs, or surgery.
  • immunosuppressive — capable of causing immunosuppression: immunosuppressive drugs.
  • immunotherapeutic — (immunology, medicine) Of a pharmaceutical, acting on the immune system to treat disease; used in immunotherapy.
  • impossible figure — a picture of an object that at first sight looks three-dimensional but cannot be a two-dimensional projection of a real three-dimensional object, for example a picture of a staircase that re-enters itself while appearing to ascend continuously
  • in forma pauperis — as a poor person; i.e. without paying court costs
  • incubation period — the period between infection and the appearance of signs of a disease.
  • indecent exposure — the intentional exposure of one's body's privates in a manner that gives offense against accepted or prescribed behavior.
  • indian paintbrush — any of several semiparasitic plants belonging to the genus Castilleja, of the figwort family, as C. linariaefolia, of the western U.S.: the state flower of Wyoming.
  • influence peddler — a person who arranges to obtain favors, as government contracts, from high officials on behalf of others for a fee.
  • insupportableness — The state of being insupportable; insufferableness.
  • insurance company — company that sells insurance policies
  • insurance premium — payment on an insurance policy
  • interrupt handler — (software)   A routine which is executed when an interrupt occurs. Interrupt handlers typically deal with low-level events in the hardware of a computer system such as a character arriving at a serial port or a tick of a real-time clock. Special care is required when writing an interrupt handler to ensure that either the interrupt which triggered the handler's execution is masked out (inhibitted) until the handler exits, or the handler is re-entrant so that multiple concurrent invocations will not interfere with each other. If interrupts are masked then the handler must execute as quickly as possible so that important events are not missed. This is often arranged by splitting the processing associated with the event into "upper" and "lower" halves. The lower part is the interrupt handler which masks out further interrupts as required, checks that the appropriate event has occurred (this may be necessary if several events share the same interrupt), services the interrupt, e.g. by reading a character from a UART and writing it to a queue, and re-enabling interrupts. The upper half executes as part of a user process. It waits until the interrupt handler has run. Normally the operating system is responsible for reactivating a process which is waiting for some low-level event. It detects this by a shared flag or by inspecting a shared queue or by some other synchronisation mechanism. It is important that the upper and lower halves do not interfere if an interrupt occurs during the execution of upper half code. This is usually ensured by disabling interrupts during critical sections of code such as removing a character from a queue.
  • interrupt request — (IRQ) The name of an input found on many processors which causes the processor to suspend normal instruction execution temporarily and to start executing an interrupt handler routine. Such an input may be either "level sensitive" - the interrupt condition will persist as long as the input is active or "edge triggered" - an interrupt is signalled by a low-to-high or high-to-low transition on the input. Some processors have several interrupt request inputs allowing different priority interrupts.
  • interrupted screw — a screw having the thread interrupted in one or more places by longitudinal channels, as in the breech of a cannon or the lead screw of a lathe.
  • irreproducibility — The quality of not being reproducible.
  • judgment of paris — the decision by Paris to award Aphrodite the golden apple of discord competed for by Aphrodite, Athena, and Hera.
  • jump trace buffer — (JTB) A feature of some pipelined processors (e.g. Amulet, Pentium?) which stores the source and destination addresses of the last few branch instuctions executed. When a branch instruction is fetched, its source is looked for in the JTB. If found, the next instuction fetch will be from the previous destination of that branch. If it turns out that the branch shouldn't have been taken this time, then the pipeline is flushed. This means that in a tight loop it is not necessary to flush the pipeline every time you jump back to the start.
  • jurisprudentially — In terms of jurisprudence.
  • jus primae noctis — droit du seigneur.
  • karelian republic — a constituent republic of NW Russia between the White Sea and Lakes Onega and Ladoga. Capital: Petrozavodsk. Pop: 716 700 (2002). Area: 172 400 sq km (66 560 sq miles)
  • kastor and pollux — Castor and Pollux.
  • keep your balance — If you keep your balance, for example when standing in a moving vehicle, you remain steady and do not fall over. If you lose your balance, you become unsteady and fall over.
  • l'hospital's rule — the theorem that for the quotient of two functions satisfying certain conditions on a given closed interval, each having infinite limit or zero as limit at a given point, the limit of the quotient at the given point is equal to the limit of the quotient of the derivatives of each function.
  • la perouse strait — a strait between S Sakhalin Island, Russia and N Hokkaido Island, Japan connecting the Sea of Okhotsk and the Sea of Japan. 25 miles (40 km) wide.
  • least upper bound — an upper bound that is less than or equal to all the upper bounds of a particular set. 3 is the least upper bound of the set consisting of 1, 2, 3. Abbr.: lub.
  • lighthouse keeper — a person who mans a lighthouse and makes sure that the light is working properly
  • ligurian republic — the republic in NW Italy set up by Napoleon in 1797, incorporated into France in 1805, and united with the Kingdom of Sardinia in 1814.
  • liquid petrolatum — mineral oil.
  • liquid propellant — a rocket propellant in liquid form.
  • loco supra citato — l.s.c.
  • lumpenproletariat — the lowest level of the proletariat comprising unskilled workers, vagrants, and criminals and characterized by a lack of class identification and solidarity.
  • malagasy republic — former name of Madagascar.
  • manual typewriter — a keyboard machine, operated entirely by hand, for writing mechanically in characters resembling print
  • maximum principle — the theorem that a function of a complex variable that is analytic in a domain and on its boundary attains its maximum absolute value on the boundary.
  • medical procedure — A medical procedure is a medical treatment or operation.
  • mercuric sulphide — a compound of mercury, usually existing as a black solid (metacinnabarite) or a red solid (cinnabar or vermilion), which is used as a pigment. Formula: HgS
  • mercury poisoning — illness caused by exposure to mercury
  • methylidyne group — the trivalent group ≡CH.
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