22-letter words containing p, t, c
- magnetic dipole moment — a measure of the magnetic strength of a magnet or current-carrying coil, expressed as the torque per unit magnetic-flux density produced when the magnet or coil is set with its axis perpendicular to the magnetic field
- magnetic pole strength — Electricity. a measure of the force exerted by one face of a magnet on a face of another magnet when both magnets are represented by equal and opposite poles. Symbol: m.
- mcculloch-pitts neuron — (artificial intelligence) The basic building block of artificial neural networks. It receives one or more inputs and produces one or more identical outputs, each of which is a simple non-linear function of the sum of the inputs to the neuron. The non-linear function is typically a threshhold or step function which is usually smoothed (i.e. a sigmoid) to facilitate learning.
- microspectrophotometer — a spectrophotometer for examining light emitted, transmitted, or reflected by minute objects.
- microspectrophotometry — a spectrophotometer for examining light emitted, transmitted, or reflected by minute objects.
- microwave spectroscopy — the determination of those frequencies of the microwave spectrum that are selectively absorbed by certain materials, providing information about atomic, molecular, and crystalline structure.
- motoring correspondent — a journalist who reviews and writes about cars
- multiplicative inverse — reciprocal (def 9).
- myalgic encephalopathy — a condition characterized by painful muscles, extreme fatigue, and general debility, sometimes occurring as a sequel to viral illness
- non-constructive proof — (logic) (Or "existence proof") A proof that something exists that does not provide an example of that thing or a method for finding an example. (A constructive proof does provide such an example or method). For example, for any pair of finite real numbers n < 0 and p > 0 there exists a real number 0 < k < 1 such that f(k) = (1-k)*n + k*p = 0. A non-constructive proof might proceed by observing that as k changes continuously from 0 to 1, f(k) changes continuously from n to p and, since they lie either side of zero, f(k) must pass through zero for some intermediate value of k. This proof does not tell us what that value of k is, only that it exists.
- nonspecific urethritis — nongonococcal urethritis.
- nonspecular reflection — the diffuse reflection of sound or light waves
- oak processionary moth — a moth, (Thaumetopoea processionea), of the family Thaumetopoeidae, the larvae of which leave the communal shelter nightly for food in a V-shaped procession
- object-oriented pascal — Object Pascal
- obtaining by deception — the offence of dishonestly obtaining the property of another by some deception or misrepresentation of facts
- occupational therapist — professional who assists with rehabilitation
- oceanic whitetip shark — whitetip shark (def 2).
- open network computing — (ONC) Sun's network protocols.
- open source definition — (standard) (OSD) Definition of distribution terms for open source software, promoted by the Open Source Initiative.
- open source initiative — (body) (OSI) An organisation dedicated to managing and promoting the Open Source Definition for the good of the community.
- operating instructions — instructions on how to use something (such an electrical appliance, etc)
- out-of-body experience — a vivid feeling of being detached from one's body, usually involving observing it and its environment from nearby
- out-of-pocket expenses — expenses which are unbudgeted and paid for in cash
- outline specifications — preliminary specifications or plans on which later plans are based
- packet internet groper — ping
- parliamentary election — an election to select the members of a national parliament
- paroxysmal tachycardia — tachycardia that begins and subsides suddenly.
- particular affirmative — a proposition of the form “Some S is P.” Symbol: I.
- partnerships for peace — a subsidiary organization of NATO, comprising former Warsaw Pact countries that wish to be allied with NATO but have not been granted full NATO membership: established in 1994
- pavlovian conditioning — conditioning (def 2).
- pay dearly/cost dearly — If you pay dearly for doing something or if it costs you dearly, you suffer a lot as a result.
- peanut-butter sandwich — a sandwich with a filling of peanut-butter
- percussive maintenance — (jargon) The fine art of whacking a device to get it working, possibly using a fine adjuster.
- phosphorus trichloride — a clear, colorless, fuming liquid, PCl 3 , used chiefly in organic synthesis as a chlorinating agent.
- picture of dorian gray — a novel (1891) by Oscar Wilde.
- planck's radiation law — the law that energy associated with electromagnetic radiation, as light, is composed of discrete quanta of energy, each quantum equal to Planck's constant times the corresponding frequency of the radiation: the fundamental law of quantum mechanics.
- plastic pin grid array — (hardware, processor) (PPGA) The package used for certain Intel Celeron processors. PPGA processors fit into Socket 370 motherboard sockets. The Plastic Pin Grid Array packaging is similar to that used on Pentium processors. The silicon core is covered by a heat slug that faces down toward the motherboard. The Celeron 300A to the 533 use a PPGA package. The Celeron 566 onward use a FC-PGA package. Celeron processors are also available in Slot 1 SEPP packaging.
- play one's cards right — a usually rectangular piece of stiff paper, thin pasteboard, or plastic for various uses, as to write information on or printed as a means of identifying the holder: a 3″ × 5″ file card; a membership card.
- pneumocystis pneumonia — a pulmonary infection caused by the protozoan Pneumocystis carinii, occurring as an opportunistic disease in persons with impaired immune systems, as AIDS victims. Abbreviation: PCP.
- polymyalgia rheumatica — a chronic inflammatory disease, common among older persons, characterized by recurrent episodes of muscle pain and stiffness, sometimes leading to cardiovascular complications or blindness.
- portuguese east africa — former name of Mozambique (def 1).
- portuguese west africa — a republic in SW Africa: formerly an overseas province of Portugal; gained independence Nov. 11, 1975. 481,226 sq. mi. (1,246,375 sq. km). Capital: Luanda.
- positive reinforcement — encouragement
- post office department — former name of United States Postal Service.
- potassium ferricyanide — a bright-red, crystalline, water-soluble, poisonous solid, K 3 Fe(CN) 6 , used chiefly in the manufacture of pigments, as Prussian blue, and of paper, especially blueprint paper.
- potassium ferrocyanide — a lemon-yellow, crystalline, water-soluble solid, K 4 Fe(CN) 6 ⋅3H 2 O, used chiefly in casehardening alloys having an iron base and in dyeing wool and silk.
- practice makes perfect — If you say 'practice makes perfect', you mean that it is possible to learn something or develop a skill if you practise enough. People often say this to encourage someone to keep practising.
- preventive maintenance — (PM) To bring down a machine for inspection or test purposes. See provocative maintenance, scratch monkey.
- price variation clause — a clause in a contract allowing the seller to vary the selling price under certain conditions
- primary rate interface — (PRI) A type of ISDN connection. In North America and Japan, this consists of 24 channels, usually divided into 23 B channels and 1 D channel, and runs over the same physical interface as T1. Elsewhere the PRI has 31 user channels, usually divided into 30 B channels and 1 D channel and is based on the E1 interface. PRI is typically used for connections such as one between a PBX (private branch exchange, a telephone exchange operated by the customer of a telephone company) and a CO (central office, of the telephone company) or IXC (inter exchange carrier, a long distance telephone company).