0%

20-letter words containing u, d, o

  • least-squares method — a method of estimating values from a set of observations by minimizing the sum of the squares of the differences between the observations and the values to be found.
  • lieutenant commander — a commissioned officer ranking next below a commander and next above a lieutenant.
  • longitude by account — the longitude of the position of a vessel as estimated by dead reckoning.
  • longitudinal framing — a system for framing steel vessels in which light, closely spaced, longitudinal frames are connected by heavy, widely spaced transverse frames with deep webs.
  • longitudinal section — the representation of an object as it would appear if cut by the vertical plane passing through the longest axis of the object.
  • lou gehrig's disease — amyotrophic lateral sclerosis.
  • macular degeneration — degeneration of the central portion of the retina, resulting in a loss of sharp vision.
  • mail-order catalogue — a catalogue of goods you can buy from a particular company by mail order
  • microwave background — a background of microwave electromagnetic radiation with a black-body spectrum discovered in 1965, understood to be the thermal remnant of the big bang with which the universe began
  • midcourse correction — a navigational correction made in the course of a ship, airplane, rocket, or space vehicle at some point between the beginning and end of the journey.
  • molybdenum disulfide — a black crystalline powder, MoS 2 , insoluble in water, used as a lubricant and as a hydrogenation catalyst.
  • monosodium glutamate — a white, crystalline, water-soluble powder, C 5 H 8 NNaO 4 ⋅H 2 O, used to intensify the flavor of foods.
  • motor neuron disease — Motor neuron disease is a disease which destroys the part of a person's nervous system that controls movement.
  • mpeg-1 audio layer 1 — (audio, compression, algorithm)   (MP1) A simple 32-subband audio compressor using a floating point representation for subband samples. Resolution and scale factor are stored for groups of 12 subsamples. MP1 is only used for Philips DCC Digital Compact cassette with data rates of 384 kbps.
  • mpeg-1 audio layer 3 — (music, file format)   (MP3) A digital audio compression algorithm that acheives a compression factor of about twelve while preserving sound quality. It does this by optimising the compression according to the range of sound that people can actually hear. MP3 is currently (July 1999) the most powerful algorithm in a series of audio encoding standards developed under the sponsorship of the Moving Picture Experts Group (MPEG) and formalised by the International Organization for Standardization (ISO). MP3 is very different from Layer 2, using an additional MDCT layer to increase frequency resolution. Its scale factor groups are more optimised for the human ear, and it uses nonlinear sample quantisation and Huffman coding. MP3 files (filename extension ".mp3") can be downloaded from many websites and can be played using software available for most operating systems (also downloadable), e.g. Winamp for PC, MacAmp for Macintosh, and mpeg123 for Unix. MP3 files are usually downloaded completely before playing but streaming MP3 is also possible. A program called a "ripper" can be used to copy a selection from a music CD onto your hard disk and another program called an encoder can convert it to an MP3 file.
  • mpeg-2 audio layer 3 — (compression, standard, algorithm, file format)   An extention of MPEG-1 audio layer 3 for lower sampling rates (16-24 kHz) targeting bit rates from 32-64 kbps (possibly 8-160 kbps). It is often combined with MPEG-2 LSF.
  • multi-user dimension — (games)   (MUD) (Or Multi-User Domain, originally "Multi-User Dungeon") A class of multi-player interactive game, accessible via the Internet or a modem. A MUD is like a real-time chat forum with structure; it has multiple "locations" like an adventure game and may include combat, traps, puzzles, magic and a simple economic system. A MUD where characters can build more structure onto the database that represents the existing world is sometimes known as a "MUSH". Most MUDs allow you to log in as a guest to look around before you create your own character. Historically, MUDs (and their more recent progeny with names of MU- form) derive from a hack by Richard Bartle and Roy Trubshaw on the University of Essex's DEC-10 in 1979. It was a game similar to the classic Colossal Cave adventure, except that it allowed multiple people to play at the same time and interact with each other. Descendants of that game still exist today and are sometimes generically called BartleMUDs. There is a widespread myth that the name MUD was trademarked to the commercial MUD run by Bartle on British Telecom (the motto: "You haven't *lived* 'til you've *died* on MUD!"); however, this is false - Richard Bartle explicitly placed "MUD" in the PD in 1985. BT was upset at this, as they had already printed trademark claims on some maps and posters, which were released and created the myth. Students on the European academic networks quickly improved on the MUD concept, spawning several new MUDs (VAXMUD, AberMUD, LPMUD). Many of these had associated bulletin-board systems for social interaction. Because these had an image as "research" they often survived administrative hostility to BBSs in general. This, together with the fact that Usenet feeds have been spotty and difficult to get in the UK, made the MUDs major foci of hackish social interaction there. AberMUD and other variants crossed the Atlantic around 1988 and quickly gained popularity in the US; they became nuclei for large hacker communities with only loose ties to traditional hackerdom (some observers see parallels with the growth of Usenet in the early 1980s). The second wave of MUDs (TinyMUD and variants) tended to emphasise social interaction, puzzles, and cooperative world-building as opposed to combat and competition. In 1991, over 50% of MUD sites are of a third major variety, LPMUD, which synthesises the combat/puzzle aspects of AberMUD and older systems with the extensibility of TinyMud. The trend toward greater programmability and flexibility will doubtless continue. The state of the art in MUD design is still moving very rapidly, with new simulation designs appearing (seemingly) every month. There is now a move afoot to deprecate the term MUD itself, as newer designs exhibit an exploding variety of names corresponding to the different simulation styles being explored. See also bonk/oif, FOD, link-dead, mudhead, MOO, MUCK, MUG, MUSE, chat.
  • multimedia extension — Matrix Math eXtensions
  • multistep hydroplane — a motorship having a flat bottom built as a series of planes inclined forward, the ship planing on each from stem to stern as its speed increases.
  • mum-and-dad investor — a small-scale non-professional investor
  • neighbourhood warden — a person employed by a local authority to patrol residential areas and deal with antisocial behaviour
  • net domestic product — the gross domestic product minus an allowance for the depreciation of capital goods
  • net national product — the gross national product less allowance for depreciation of capital goods. Abbreviation: NNP.
  • nodding acquaintance — a slight, incomplete, or superficial knowledge (of something or someone): He had only a nodding acquaintance with Italian and didn't trust it to get him through the tour. Although we were neighbors for several years, we had only a nodding acquaintance.
  • nonaccidental injury — damage, such as a bruise, burn, or fracture, deliberately inflicted on a child or an old person
  • noninstitutionalized — Not institutionalized.
  • nostalgie de la boue — a desire for or attraction to crudity, vulgarity, depravity, etc.
  • not mince your words — If you say that someone does not mince their words, you mean that they speak in a forceful and direct way, especially when saying something unpleasant to someone.
  • not out of the woods — If something or someone is not out of the woods yet, they are still having difficulties or problems.
  • notre dame mountains — a mountain range in E Quebec, Canada, an extension of the Green Mountains in Vermont and a portion of the Appalachian Mountains: about 500 miles (800 km) long, rising about 2000 feet (610 meters).
  • obfuscated c contest — (programming)   The International Obfuscated C Code Contest (IOCCC) is an annual contest run since 1984 over Usenet by Landon Curt Noll and friends. The overall winner is whoever produces the most unreadable, creative, and bizarre (but working) C program. Various other prizes are awarded at the judges' whim. C's terse syntax and macro-preprocessor facilities give contestants a lot of maneuvering room. The winning programs often manage to be simultaneously funny, breathtaking works of art and horrible examples of how *not* to code in C. This relatively short and sweet hello, world program demonstrates obfuscated C: /* HELLO WORLD program * by Jack Applin and Robert Heckendorn, 1985 */ main(v,c)char**c;{for(v[c++]="Hello, world!\n)"; (!!c)[*c]&&(v--||--c&&execlp(*c,*c,c[!!c]+!!c,!c)); **c=!c)write(!!*c,*c,!!**c);} Here's another good one: /* Program to compute an approximation of pi * by Brian Westley, 1988 */ #define _ -F<00||--F-OO--; int F=00,OO=00; main(){F_OO();printf("%1.3f\n",4.*-F/OO/OO);}F_OO() { _-_-_-_ _-_-_-_-_-_-_-_-_ _-_-_-_-_-_-_-_-_-_-_-_ _-_-_-_-_-_-_-_-_-_-_-_-_-_ _-_-_-_-_-_-_-_-_-_-_-_-_-_-_ _-_-_-_-_-_-_-_-_-_-_-_-_-_-_ _-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_ _-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_ _-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_ _-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_ _-_-_-_-_-_-_-_-_-_-_-_-_-_-_ _-_-_-_-_-_-_-_-_-_-_-_-_-_-_ _-_-_-_-_-_-_-_-_-_-_-_-_-_ _-_-_-_-_-_-_-_-_-_-_-_ _-_-_-_-_-_-_-_ _-_-_-_ } Note that this program works by computing its own area. For more digits, write a bigger program.
  • occupational disease — Also called industrial disease. a disease caused by the conditions or hazards of a particular occupation.
  • ode on a grecian urn — a poem (1819) by Keats.
  • officer of the guard — an officer, acting under the officer of the day, who is responsible for the instruction, discipline, and performance of duty of the guard in a post, camp, or station. Abbreviation: OG, O.G.
  • on the sunny side of — younger than (a specified age)
  • outside (of) the box — in a fresh, inventive, unconventional way
  • owner-occupied house — a house that is owned by the person who lives in it
  • pappus of alexandria — 3rd century bc, Greek mathematician, whose eight-volume Synagoge is a valuable source of information about Greek mathematics
  • parallel of altitude — almucantar.
  • parallel of latitude — parallel (def 9).
  • pedro juan caballero — a city in E central Paraguay.
  • pentobarbital sodium — a barbiturate drug used in medicine as a sedative and hypnotic. Formula: C11H17N2O3Na
  • pentose nucleic acid — a nucleic acid containing a pentose.
  • period of revolution — a rather large interval of time that is meaningful in the life of a person, in history, etc., because of its particular characteristics: a period of illness; a period of great profitability for a company; a period of social unrest in Germany.
  • permonosulfuric acid — persulfuric acid (def 1).
  • peroxysulphuric acid — a white hygroscopic crystalline unstable oxidizing acid. Formula: H2SO5
  • perpendicular gothic — the style of Gothic architecture in England during the 14th and 15th centuries, characterized by tracery having vertical lines, a four-centred arch, and fan vaulting
  • phosphorus pentoxide — a white, deliquescent, crystalline powder, P 2 O 5 , that, depending upon the amount of water it absorbs, forms orthophosphoric acid, metaphosphoric acid, or pyrophosphoric acid, produced by the burning of phosphorus in dry air: used in the preparation of phosphoric acids, as a drying and dehydrating agent, and in organic synthesis.
  • photoconductive cell — Electronics. a photocell whose resistance varies according to the intensity of light falling on it.
  • physical double star — two stars that appear as one if not viewed through a telescope with adequate magnification, such as two stars that are separated by a great distance but are nearly in line with each other and an observer (optical double star) or those that are relatively close together and comprise a single physical system (physical double star)
Was this page helpful?
Yes No
Thank you for your feedback! Tell your friends about this page
Tell us why?