16-letter words containing o, a, k, p, r
- anode dark space — the dark region between the anode glow and the anode in a vacuum tube, occurring when the pressure is low.
- antiparkinsonian — An antiparkinsonian is an agent used in the treatment of Parkinson's disease.
- aston dark space — the dark region between the cathode and the cathode glow in a vacuum tube, occurring when the pressure is low.
- back-propagation — (Or "backpropagation") A learning algorithm for modifying a feed-forward neural network which minimises a continuous "error function" or "objective function." Back-propagation is a "gradient descent" method of training in that it uses gradient information to modify the network weights to decrease the value of the error function on subsequent tests of the inputs. Other gradient-based methods from numerical analysis can be used to train networks more efficiently. Back-propagation makes use of a mathematical trick when the network is simulated on a digital computer, yielding in just two traversals of the network (once forward, and once back) both the difference between the desired and actual output, and the derivatives of this difference with respect to the connection weights.
- background paper — a report or other piece of writing that is intended to provide contextual and historical information that will help people understand a particular topic or situation
- bacterioplankton — (biology) The bacterial component of marine plankton.
- bankruptcy court — a section of the United States federal court which specializes in the handling of bankruptcy cases
- bankruptcy order — a court order appointing a receiver to manage the property of a debtor or bankrupt
- black propaganda — propaganda that does not come from the source it claims to come from
- black woodpecker — a large woodpecker, Dryocopus martius, found in parts of Eurasia and Africa
- blink comparator — an optical instrument used to detect small differences in two photographs of the same field or object by viewing them alternately, switching rapidly from one to the other.
- bouquet larkspur — a plant, Delphinium grandiflorum, of eastern Asia, having blue or whitish flowers and hairy fruit.
- brake horsepower — the rate at which an engine does work, expressed in horsepower. It is measured by the resistance of an applied brake
- break-even point — When a company reaches break-even point, the money it makes from the sale of goods or services is just enough to cover the cost of supplying those goods or services, but not enough to make a profit.
- burkitt lymphoma — a rare type of tumour of the white blood cells, occurring mainly in Africa and associated with infection by Epstein-Barr virus
- carpatho-ukraine — a region in W Ukraine: ceded by Czechoslovakia in 1945.
- chernobyl packet — (networking) /cher-noh'b*l pak'*t/ A network packet that induces a broadcast storm and/or network meltdown, named in memory of the April 1986 nuclear accident at Chernobyl in Ukraine. The typical scenario involves an IP Ethernet datagram that passes through a gateway with both source and destination Ethernet address and IP address set as the respective broadcast addresses for the subnetworks being gated between. Compare Christmas tree packet.
- cooperative bank — a cooperative savings institution, chartered and regulated by a state or the federal government, that receives deposits in exchange for shares of ownership and invests its funds chiefly in loans secured by first mortgages on homes.
- cracked up to be — alleged or believed to be
- educational park — a group of elementary and high schools, usually clustered in a parklike setting and having certain facilities shared by all grades, that often accommodates students from a large area.
- firework display — a public event at which fireworks are set alight
- for pete's sake! — an expression of frustration, exasperation or annoyance
- formation packer — A formation packer is a substance that is used as a seal between the casing and the borehole so that part of the hole can be tested.
- hairy woodpecker — a North American woodpecker, Picoides villosus, resembling but larger than the downy woodpecker.
- hard-packed snow — snow which becomes very firmly packed as it becomes refrozen due to cold weather conditions rather than melting
- information pack — a set of leaflets giving information about something
- kaposi's sarcoma — a form of skin cancer found in Africans and more recently in victims of AIDS
- keep on a string — to have control or a hold over (someone), esp emotionally
- key note speaker — a person who delivers a keynote address.
- kleptoparasitism — The parasitic theft of captured prey, nest material, etc. from animals of the same or another species.
- knapsack problem — the problem of determining which numbers from a given collection of numbers have been added together to yield a specific sum: used in cryptography to encipher (and sometimes decipher) messages.
- knock for a loop — a portion of a cord, ribbon, etc., folded or doubled upon itself so as to leave an opening between the parts.
- large-print book — a book where the text is printed in larger text than normal, so as to make it easier to read, esp for the visually impaired
- make a pitch for — to give verbal support to
- man booker prize — an annual prize for a work of Commonwealth or Irish fiction of £50,000, awarded as the Booker Prize from 1969–2002
- morris plan bank — a private banking organization, formerly common in the U.S., designed primarily to grant small loans to industrial workers.
- network operator — (job) A person who monitors and maintains the operation of a communications network. A network operator troubleshoots hardware (cables, routers, network switches, hubs, network adaptors), software, and transmission problems.
- packing fraction — Physics. a measure of the stability of an atomic nucleus, equal to 10 4 multiplied by the mass defect and divided by the mass number.
- parkerhouse roll — a yeast roll shaped by folding over a flat, round piece of buttered dough
- pharmacokinetics — the branch of pharmacology that studies the fate of pharmacological substances in the body, as their absorption, distribution, metabolism, and elimination.
- pocket billiards — pool2 (def 1).
- pocket secretary — a long, narrow walletlike case, usually of leather and containing pockets for credit and business cards, paper money, etc., and sometimes a notepad and pencil.
- pork scratchings — small pieces of crisply cooked pork crackling, eaten cold as an appetizer with drinks
- posigrade rocket — an auxiliary rocket used to separate the sections of a multistage rocket, fired in the direction of flight.
- punctuation mark — any of a group of conventional marks or characters used in punctuation, as the period, comma, semicolon, question mark, or dash.
- rape of the lock — a mock-epic poem (1712) by Alexander Pope.
- rolled paperwork — a form of decoration on small objects, such as boxes, in which a design is made up of tiny rolls of paper cut crossways and laid together: popular in the 18th and 19th centuries
- sharpe's grysbok — either of two small, usually solitary antelopes of southern Africa, Raphicerus melanotis, or R. sharpei (Sharpe's grysbok) having a light to dark reddish-brown coat speckled with white.
- shoemaker's shop — a shop where shoes are repaired, or made
- sick as a parrot — very disappointed
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