21-letter words containing o, p, e, n
- professional services — (job) A department of a supplier providing consultancy and programming manpower for the supplier's products.
- profit-sharing scheme — a scheme employing profit-sharing; a system in which a portion of the net profit of a business is distributed to its employees, usually in proportion to their wages or their length of service
- 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.
- projection television — a television picture display system consisting of a special receiver and an optical system that projects an enlarged picture on a screen.
- prone pressure method — a method of artificial respiration in which the patient is placed face downward, pressure then being rhythmically applied with the hands to the lower part of the thorax.
- propantheline bromide — a substance, C 2 3 H 3 0 BrNO 3 , used in the treatment of peptic ulcers.
- protective coloration — coloration or anything likened to it that eliminates or reduces visibility or conspicuousness.
- protest demonstration — a manifestation of protest by public rally, parade, etc
- protestant work ethic — work ethic.
- pseudo-cleft sentence — cleft sentence (def 2).
- psychoneuroimmunology — the study of the effects of psychological factors on the immune system
- public-key encryption — (cryptography) (PKE, Or "public-key cryptography") An encryption scheme, introduced by Diffie and Hellman in 1976, where each person gets a pair of keys, called the public key and the private key. Each person's public key is published while the private key is kept secret. Messages are encrypted using the intended recipient's public key and can only be decrypted using his private key. This is often used in conjunction with a digital signature. The need for sender and receiver to share secret information (keys) via some secure channel is eliminated: all communications involve only public keys, and no private key is ever transmitted or shared. Public-key encryption can be used for authentication, confidentiality, integrity and non-repudiation. See also knapsack problem.
- pull oneself together — to draw or haul toward oneself or itself, in a particular direction, or into a particular position: to pull a sled up a hill.
- 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-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.
- purple-fringed orchid — either of two orchids, Habenaria fimbriata or H. psycodes, of eastern North America, having a cluster of fragrant purple flowers with a fringed lip.
- purple-fringed orchis — either of two North American orchids (Habenaria psycodes and H. fimbriata) with purple-fringed flowers
- push the panic button — an alarm button for use in an emergency, as to summon help.
- put someone wise (to) — to give someone information, an explanation, etc. (about); enlighten someone (concerning)
- put someone's back up — to annoy someone
- put something over on — to deceive; trick
- pyrenean mountain dog — a large heavily built dog of an ancient breed originally used to protect sheep from wild animals: it has a long thick white coat with a dense ruff
- quality point average — grade point average.
- quantum teleportation — a hypothetical technique to instantly transfer properties from one quantum system to another without contact, or to transfer a quantum state to an arbitrarily distant location.
- queen's-pawn openings — a class of chess openings in which the pawn in front of the queen is advanced two squares on the first move.
- queer someone's pitch — to upset someone's plans
- rap over the knuckles — to reprimand
- reading comprehension — a text that students use to help them improve their reading skills, by reading it and answering questions relating to the text. Sometimes used as a test or examination of reading skills. A reading comprehension can be in the student's own or another language
- real operating system — (operating system, abuse) The sort the speaker is used to. People from the BSDophilic academic community are likely to issue comments like "System V? Why don't you use a *real* operating system?", people from the commercial/industrial Unix sector are known to complain "BSD? Why don't you use a *real* operating system?", and people from IBM object "Unix? Why don't you use a *real* operating system?" See holy wars, religious issues, proprietary, Get a real computer!.
- reciprocal inhibition — the theory that the pairing of an anxiety-provoking stimulus with anxiety-reducing reactions will weaken the association between the stimulus and the anxiety.
- recompression chamber — hyperbaric chamber.
- reconnaissance patrol — a patrol made by soldiers in order to obtain military information about a particular place
- rectangular hyperbola — a hyperbola with perpendicular asymptotes
- redevelopment company — a private corporation or a public agency that stimulates the improvement of land, as through a building project subject to certain designs and controls, by financing, selling, or leasing such real estate to interested buyers or lessees.
- redwood national park — a national park in N California: redwood forest with some of the world's tallest trees. 172 sq. mi. (445 sq. km).
- reinforcement therapy — a behavior modification technique in which appropriate behavior is strengthened through systematic reinforcement.
- repatriation expenses — Repatriation expenses are the costs involved in transporting a claimant or their body back to their own country after they have been injured or killed in a foreign country.
- replacement algorithm — The method used to determine which entry in an associative cache to flush to main memory when it is desired to cache a new block of data. The "least recently used" algorithm flushed the block which has not been accessed for the longest time. A random replacement algorithm picks any block with equal probability.
- residual unemployment — the unemployment that remains in periods of full employment, as a result of those mentally, physically, or emotionally unfit to work
- return from interrupt — (programming) (RTI) An instruction mnemonic on many computers including the 6502 and 6800. The variant "RETI" is found among former Zilog Z80 hackers (almost nobody programs these things in assembly code anymore). The Intel 80x86 equivalent is "IRET".
- return the compliment — repay sb's kindness with a kind act
- reverse polish syntax — postfix notation
- roll up one's sleeves — to prepare oneself for work, a fight, etc
- roll with the punches — a thrusting blow, especially with the fist.
- round-necked pullover — a sweater with a plain round neckline
- sales finance company — a finance company that purchases, at a discount, installment contracts from dealers or that finances retail sales.
- sanitation department — the department of local government responsible for collecting and disposing of refuse
- sao bernardo do campo — a city in SE Brazil, SE of São Paulo.
- sao tome and principe — Democratic Republic of, a republic in W Africa, comprising the islands of São Tomé and Príncipe, in the Gulf of Guinea, N of the equator: a former overseas province of Portugal; gained independence in 1975. 372 sq. mi. (964 sq. km). Capital: São Tomé.