20-letter words containing o, d, p, r, i
- a drop in the bucket — an amount very small in relation to what is needed or desired
- a lick and a promise — something hastily done, esp a hurried wash
- a safe pair of hands — If you say that someone is or has a safe pair of hands, you mean that they are reliable and will not make any serious mistakes.
- acadia national park — a national park in Maine, on Mount Desert Island. 44 sq. mi. (114 sq. km).
- adrenocorticotrophic — stimulating the adrenal cortex
- adrenocorticotrophin — (hormone) adrenocorticotropic hormone.
- aids-related complex — a condition that may develop into AIDS, characterized by the enlargement of the lymph nodes
- air-raid precautions — measures taken to protect the public from air-raid attacks
- amateur packet radio — (communications) (PR) The use of packet radio by amateurs to communicate between computers. PR is a complete amateur radio computer network with "digipeaters" (relays), mailboxes (BBS) and other special nodes. In Germany, it is on HF, say, 2m (300 and 1200 BPS), 70cm (1200 to 9600 BPS), 23cm (normally 9600 BPS and up, currently most links between digipeaters) and higher frequencies. There is a KW (short wave) Packet Radio at 300 BPS, too. Satellites with OSCAR (Orbiting Sattelite Carring Amateur Radio) transponders (mostly attached to commercial satellites by the AMateur SATellite (AMSAT) group) carry Packet Radio mailboxes or digipeaters. There are both on-line and off-line services on the packet radio network: You can send electronic mail, read bulletins, chat, transfer files, connect to on-line DX-Clusters (DX=far distance) to catch notes typed in by other HAMs about the hottest international KW connections currently coming up (so you can pile up). PR uses AX.25 (an X.25 derivative) as its transport layer and sometimes even TCP/IP is transmitted over AX.25. AX.25 is like X.25 but the adressing uses HAM "calls" like "DG8MGV". There are special "wormholes" all over the world which "tunnel" amateur radio traffic through the Internet to forward mail. Sometimes mails travels over satelites. Normally amateur satellites have strange orbits, however the mail forwarding or mailbox satellites have very predictable orbits. Some wormholes allow HAMs to bridge from Internet to AMPR-NET, e.g. db0fho.ampr.org or db0fho.et-inf.fho-emden.de, but only if you are registered HAM. Because amateur radio is not for profit, it must not be interconnected to the Internet but it may be connected through the Internet. All people on the (completely free) amateur radio net must be licensed radio amateurs and must have a "call" which is unique all over the world. There is a special domain AMPR.ORG (44.*.*.*) for amateur radio reserved in the IP space. This domain is split between countries, which can further subdivide it. For example 44.130.*.* is Germany, 44.130.58.* is Augsburg (in Bavaria), and 44.130.58.20 is dg8mgv.ampr.org (you may verify this with nslookup). Mail transport is only one aspect of packet radio. You can talk interactively (as in chat), read files, or play silly games built in the Packet Radio software. Usually you can use the autorouter to let the digipeater network find a path to the station you want. However there are many (sometimes software incompatible) digipeaters out there, which the router cannot use. Paths over 1000 km are unlikely to be useable for real-time communication and long paths can introduce significant delay times (answer latency). Other uses of amateur radio for computer communication include RTTY (baudot), AMTOR, PACTOR, and CLOVER.
- anomalous dispersion — a sudden change in the refractive index of a material for wavelengths in the vicinity of absorption bands in the spectrum of the material.
- antidandruff shampoo — a shampoo that prevents or treats dandruff
- apollonius of rhodes — 3rd century bc, Greek epic poet and head of the Library of Alexandria. His principal work is the four-volume Argonautica
- asexual reproduction — reproduction, as budding, fission, or spore formation, not involving the union of gametes.
- backwards compatible — backward compatibility
- baptism for the dead — the baptism of a living person in the place of and for the sake of one who has died unbaptized: now practiced chiefly by Mormons.
- basic object adapter — (architecture) (BOA) Part of the CORBA architecture.
- belgian shepherd dog — a medium-sized well-proportioned dog of a breed that resembles an Alsatian in appearance and is often used as a sheepdog or a guard dog
- binge-purge syndrome — bulimia.
- black-bellied plover — a large plover, Pluvialis squatarola, of both the New and Old Worlds, having black underparts when in nuptial plumage.
- board of supervisors — the governing body of a county in many U.S. states, especially in the Midwest and the East, consisting of from 15 to 100 members elected from towns, townships, cities, or wards.
- bomb disposal expert — an expert in bomb disposal
- brown recluse spider — a very poisonous, medium-sized spider (Loxosceles reclusa), common in the U.S., having a violin-shaped mark on its cephalothorax and only six eyes
- carbocyclic compound — any of a group of organic chemical compounds in which all the atoms composing the ring are carbon atoms, as benzene or cyclopropane.
- chapter of accidents — a series of misfortunes
- child support agency — the British government agency concerned with the welfare of children
- chromatic adaptation — the alteration by photosynthesizing organisms of the proportions of their photosynthetic pigments in response to the intensity and colour of the available light, as shown by algae in the littoral zone, which change from green to red as the zone is descended
- comparative judgment — any judgment about whether there is a difference between two or more stimuli
- complaints procedure — a prescribed method of lodging a complaint to an institution
- computing dictionary — Free On-line Dictionary of Computing
- conditioned response — a response that is transferred from the second to the first of a pair of stimuli. A well-known Pavlovian example is salivation by a dog when it hears a bell ring, because food has always been presented when the bell has been rung previously
- consumer price index — The consumer price index is an official measure of the rate of inflation within a country's economy. The abbreviation CPI is also used.
- continued proportion — geometric progression
- controlled explosion — the deliberate detonation of an explosive device under strictly controlled circumstances
- coordination complex — one of a number of complex compounds in which an atom or group of atoms is bound to the central atom by a shared pair of electrons supplied by the coordinated group and not by the central atom
- corresponding angles — a pair of nonadjacent angles, one interior and one exterior, on the same side of a transversal: these paired angles are equal if the lines cut by the transversal are parallel
- criminal proceedings — action taken in a court to bring a criminal prosecution against someone
- cycloidal propulsion — propulsion of a vessel by propellers of controllable pitch that steer as well as propel.
- darkfield microscope — kind of microscope
- decompartmentalizing — Present participle of decompartmentalize.
- decomposed petri net — (parallel) (DPN) A Petri net that has been split into multiple, interconnected nets. This makes it easier to analyse or run the net. DPNs are the basis of concurrency in ConC.
- deep vein thrombosis — Deep vein thrombosis is a serious medical condition caused by blood clots in the legs moving up to the lungs. The abbreviation DVT is also used.
- deep-vein thrombosis — a condition in which a blood clot forms in a vein deep beneath the skin, typically in the leg or pelvic area: Immobility and lack of exercise are risk factors for deep-vein thrombosis.
- definite description — a description that is modified by the definite article or a possessive, such as the woman in white or Rosemary's baby
- demographic timebomb — a predicted shortage of school-leavers and consequently of available workers, caused by an earlier drop in the birth rate, resulting in an older workforce
- denali national park — a national park in S central Alaska, including Denali (mountain). 3030 sq. mi. (7850 sq. km).
- depreciation expense — A depreciation expense is the amount deducted from gross profit to allow for a reduction in the value of something because of its age or how much it has been used.
- descriptive geometry — the study of the projection of three-dimensional figures onto a plane surface
- descriptive notation — a method of denoting the squares on the chessboard in which each player names the files from the pieces that stand on them at the opening and numbers the ranks away from himself
- desmopressin acetate — a vasopressin analogue, C 46 H 64 N 14 O 12 S 2 , used in the treatment of diabetes insipidus.
- developing-out paper — a sensitized printing paper requiring development in order to bring out the image. Abbreviation: D.O.P.
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