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21-letter words containing u, a, p, e

  • optical double (star) — double star (sense 2)
  • packed encoding rules — (protocol, standard)   (PER) ASN.1 encoding rules for producing a compact transfer syntax for data structures described in ASN.1, defined in 1994. PER provides a much more compact encoding then BER. It tries to represents the data units using the minimum number of bits. The compactness requires that the decoder knows the complete abstract syntax of the data structure to be decoded, however. Documents: ITU-T X.691, ISO 8825-2.
  • paper-white narcissus — a white-flowered variety of Narcissus tazetta, often forced for indoor bloom.
  • parliamentary inquiry — a question asked of the presiding officer of a parliament in relation to parliamentary law
  • part of the furniture — If you describe someone or something as part of the furniture, you are suggesting that they have been somewhere such as their place of work for such a long time that it is hard to imagine that place without them.
  • pass the hat (around) — In British English, if you pass the hat around, you collect money from a group of people, for example in order to give someone a present. In American English, you just say pass the hat.
  • pathfinder prospectus — a prospectus regarding the flotation of a new company that contains only sufficient details to test the market reaction
  • payload assist module — a U.S. solid-propellant rocket used to boost a medium-weight spacecraft from a circular low-earth orbit to an elliptical transfer orbit for later insertion into a geosynchronous orbit. Abbreviation: PAM.
  • pdp assembly language — (language)   (PAL) The assembly language for the PDP-8 and PDP-11.
  • peroxydisulfuric acid — persulfuric acid (def 2).
  • phrase structure tree — Linguistics. a structural representation of a sentence in the form of an inverted tree, with each node of the tree labeled according to the phrasal constituent it represents.
  • phrase-structure rule — a rule that generates a sentence or other syntactic construction from words and phrases and identifies its constituent structure.
  • picture quality scale — (graphics)   (PQS) A system for rating image quality based upon features of images that affect their perception by the human eye, rather than the traditional signal-to-noise ratio which examines differences for every single pixel.
  • pipelined burst cache — Pipeline Burst Cache
  • place of articulation — the location at which two speech organs approach or come together in producing a speech sound, as in the contact of the tongue and the teeth to form a dental sound. Also called point of articulation. Compare articulator (def 2).
  • plate glass insurance — Plate glass insurance is insurance coverage against damage to or breakage of large panes of glass such as shop windows.
  • play russian roulette — take a foolish risk
  • play with a full deck — Nautical. a floorlike surface wholly or partially occupying one level of a hull, superstructure, or deckhouse, generally cambered, and often serving as a member for strengthening the structure of a vessel. the space between such a surface and the next such surface above: Our stateroom was on B deck.
  • ploughman's spikenard — a European plant, Inula conyza, with tubular yellowish flower heads surrounded by purple bracts: family Asteraceae (composites)
  • pneumoencephalography — encephalography.
  • pomp and circumstance — ceremony
  • populist shop steward — a shop steward who operates in a delegate role, putting the immediate interests of his members before union principles and policies
  • portuguese man-of-war — any of several large, oceanic hydrozoans of the genus Physalia, having a large, bladderlike structure with a saillike crest by which they are buoyed up and from which dangle tentacles with stinging cells.
  • postpartum depression — Postpartum depression is a mental state involving feelings of anxiety and sudden mood swings which some women experience after they have given birth.
  • potassium bicarbonate — a white, crystalline, slightly alkaline, salty-tasting, water-soluble powder, KHCO 3 , produced by the passage of carbon dioxide through an aqueous potassium carbonate solution: used in cookery as a leavening agent and in medicine as an antacid.
  • potassium diphosphate — any of the three orthophosphates of potassium ((potassium monophosphate) (K 2 HPO 4), (potassium diphosphate) (KH 2 PO 4), and (tripotassium phosphate) (K 3 PO 4) )
  • potassium thiocyanate — a colorless, crystalline, hygroscopic, water-soluble solid, KSCN, used chiefly in the manufacture of chemicals, dyes, and drugs.
  • pre-sales support rep — (job)   A person who supports sales by analysing customer requirements, proposing and demonstrating technical solutions, ensuring acceptable product installations, training users and providing initial technical support.
  • preacquisition profit — the retained profit of a company earned before a takeover and therefore not eligible for distribution as a dividend to the shareholders of the acquiring company
  • premature ejaculation — a male psychosexual disorder in which ejaculation occurs soon after the commencement of sexual intercourse.
  • premenstrual syndrome — a complex of physical and emotional changes, including depression, irritability, appetite changes, bloating and water retention, breast soreness, and changes in muscular coordination, one or more of which may be experienced in the several days before the onset of menstrual flow. Abbreviation: PMS.
  • premium savings bonds — (in Britain) bonds issued by the Treasury since 1956 for purchase by the public. No interest is paid but there is a monthly draw for cash prizes of various sums
  • pressure-vacuum valve — a valve for relieving a sealed tank of any pressure or vacuum exceeding acceptable limits.
  • prince rupert's metal — a brass composed of from about 60 to 85 percent copper and about 15 to 40 percent zinc, used to imitate gold.
  • printed circuit board — a circuit in which the interconnecting conductors and some of the circuit components have been printed, etched, etc., onto a sheet or board of dielectric material (PC board, printed-circuit board)
  • probable maximum loss — Probable maximum loss is the maximum amount of loss that can be expected under normal circumstances.
  • production department — the department of a business or organization responsible for manufacturing products
  • progressive education — any of various reformist educational philosophies and methodologies since the late 1800s, applied especially to elementary schools, that reject the rote recitation and strict discipline of traditional, single-classroom teaching, favoring instead more stimulation of the individual pupil as well as group discussion, more informality in the classroom, a broader curriculum, and use of laboratories, gymnasiums, kitchens, etc., in the school.
  • pseudohermaphroditism — an individual having internal reproductive organs of one sex and external sexual characteristics resembling those of the other sex or being ambiguous in nature. Compare hermaphrodite (def 1).
  • public address system — loudspeaker
  • public health service — the agency that is responsible for the health of the general public
  • public-address system — a combination of electronic devices that makes sound audible via loudspeakers to many people, as in an auditorium or out of doors.
  • pulse code modulation — a form of modulation that transforms a wave-form, as an audio signal, into a binary signal in which information is conveyed by a coded order of pulses for transmission, storage on a disk, or processing by a computer. Abbreviation: PCM.
  • pulse height analyser — a multichannel analyser that sorts pulses into selected amplitude ranges
  • pulse height analyzer — an instrument that records or counts an electrical pulse if its amplitude falls within specified limits: used in nuclear physics research for the determination of energy spectra of nuclear radiations
  • pulse-code modulation — a form of modulation that transforms a wave-form, as an audio signal, into a binary signal in which information is conveyed by a coded order of pulses for transmission, storage on a disk, or processing by a computer. Abbreviation: PCM.
  • pulse-time modulation — radio transmission in which the carrier is modulated to produce a series of pulses timed to transmit the amplitude and pitch of a signal. Abbr.: PTM.
  • purchasing department — the group of staff within an organization that is responsible for buying goods or products
  • pure imaginary number — a complex number of the form iy where y is a real number and i = .
  • push the panic button — an alarm button for use in an emergency, as to summon help.
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