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19-letter words containing d, i, r, g

  • landrum-griffin act — an act of Congress (1959) outlawing secondary boycotts, requiring public disclosure of the financial records of unions, and guaranteeing the use of secret ballots in union voting.
  • landscape gardening — the art or trade of designing or rearranging large gardens, estates, etc.
  • leading aircraftman — the rank above aircraftman
  • learning disability — a disorder, as dyslexia, usually affecting school-age children of normal or above-normal intelligence, characterized by difficulty in understanding or using spoken or written language, and thought to be related to impairment or slowed development of perceptual motor skills.
  • lighten sb's burden — If someone or something lightens your burden or your load, they make a bad or difficult situation better for you.
  • lightning conductor — A lightning conductor is a long thin piece of metal on top of a building that attracts lightning and allows it to reach the ground safely.
  • like a dog's dinner — dressed smartly or ostentatiously
  • load-bearing printf — (programming, humour)   The kind of bug present in a program which works correctly when producing debug output but fails when the debugging is turned off. The expression combines load-bearing wall and printf as used in debugging by printf.
  • longitudinal parity — (storage, communications)   An extra byte (or word) appended to a block of data in order to reveal corruption of the data. Bit n of this byte indicates whether there was an even or odd number of "1" bits in bit position n of the bytes in the block. The parity byte is computed by XORing the data bytes in the block. Longitudinal parity allows single bit errors to be detected.
  • magnesium hydroxide — a white, crystalline, slightly water-soluble powder, Mg(OH) 2 , used chiefly in medicine as an antacid and as a laxative.
  • magnetic tape drive — (storage)   (Or "tape drive") A peripheral device that reads and writes magnetic tape.
  • magnetohydrodynamic — Of or pertaining to magnetohydrodynamics.
  • manchester encoding — (communications, protocol)   A method of transmitting bits which enables the receiver to easily synchronise with the sender. A simple way of signalling bits might be to transmit a high voltage for some period for a 1-bit and a low voltage for a 0 bit: Bits Sent: 1 1 0 0 Signal: High ___ Low |___ Time: -> . . . . . However, when several identical bits are sent in succession, this provides no information to the receiver about when each bit starts and stops. Manchester encoding splits each bit period into two, and ensures that there is always a transition between the signal levels in the middle of each bit. This allows the receiver to synchronise with the sender. In normal Manchester encoding, a 1-bit is transmitted with a high voltage in the first period, and a low voltage in the second, and vice verse for the 0 bit: Bits Sent: 1 1 0 0 Signal: High Low || |_| || Time: -> . ' . ' . ' . ' . In Differential Manchester encoding, a 1-bit is indicated by making the first half of the signal equal to the last half of the previous bit's signal and a 0-bit is indicated by making the first half of the signal opposite to the last half of the previous bit's signal. That is, a zero bit is indicated by a transition at the beginning of the bit. Like normal Manchester encoding, there is always a transition in the middle of the transmission of the bit. Differential Manchester Encoding Bits Sent: 1 1 0 0 Signal: High __ Low |_| || || Time: -> . ' . ' . ' . ' . With each bit period half as long, twice as much bandwidth is required when using either of the Manchester encoding schemes.
  • megabits per second — (unit)   (Mbps, Mb/s) Millions of bits per second. A unit of data rate. 1 Mb/s = 1,000,000 bits per second (not 1,048,576). E.g. Ethernet can carry 10 Mbps.
  • mermaid's wineglass — a colony of green algae, Acetabularia crenulata, of warm seas, having a cup-shaped cap on a slender stalk.
  • midnight regulation — a rule or directive approved by the federal government near the end of a president’s term of office
  • modulus of rigidity — shear modulus.
  • neighbourhood watch — a scheme under which members of a community agree together to take responsibility for keeping an eye on each other's property, as a way of preventing crime
  • next door neighbour — a person who lives in the house, flat, etc, next to one's home
  • no strings attached — without conditions
  • nonproprietary drug — A nonproprietary drug is a generic drug that is essentially similar to a drug with a brand name.
  • oak-leaved geranium — a geranium, Pelargonium quercifolium, of southern Africa, having oaklike leaves with purple veins and sparse clusters of purple flowers with darker markings.
  • old english pattern — a spoon pattern having a stem curving backward at the end.
  • orthopaedic surgeon — a surgeon specializing in the branch of surgery concerned with disorders of the spine and joints and the repair of deformities of these parts
  • orthopaedic surgery — surgery concerned with disorders of the spine and joints and the repair of deformities of these parts
  • parliament building — structure housing legislative offices
  • pecuniary advantage — financial advantage that is dishonestly obtained by deception and that constitutes a criminal offence
  • pedestrian crossing — place to cross road
  • pen-and-ink drawing — a drawing that is done using a pen rather than a pencil
  • percussion drilling — Percussion drilling is a drilling method which involves lifting and dropping heavy tools to break rock, and uses steel casing tubes to stop the borehole from collapsing.
  • photodisintegration — the disintegration of a nucleus, induced by its absorption of a photon.
  • physical addressing — (networking)   The low level addressing scheme used on Ethernet. The 48-bit destination Ethernet address in a packet is compared with the receiving node's Ethernet address. Compare IP address.
  • pretty good privacy — (tool, cryptography)   (PGP) A high security RSA public-key encryption application for MS-DOS, Unix, VAX/VMS, and other computers. It was written by Philip R. Zimmermann <[email protected]> of Phil's Pretty Good(tm) Software and later augmented by a cast of thousands, especially including Hal Finney, Branko Lankester, and Peter Gutmann. PGP was distributed as "guerrilla freeware". The authors don't mind if it is distributed widely, just don't ask Philip Zimmermann to send you a copy. PGP uses a public-key encryption algorithm claimed by US patent #4,405,829. The exclusive rights to this patent are held by a California company called Public Key Partners, and you may be infringing this patent if you use PGP in the USA. This is explained in the PGP User's Guide, Volume II. PGP allows people to exchange files or messages with privacy and authentication. Privacy and authentication are provided without managing the keys associated with conventional cryptographic software. No secure channels are needed to exchange keys between users, which makes PGP much easier to use. This is because PGP is based on public-key cryptography. PGP encrypts data using the International Data Encryption Algorithm with a random session key, and uses the RSA algorithm to encrypt the session key. In December 1994 Philip Zimmermann faced prosecution for "exporting" PGP out of the United States but in January 1996 the US Goverment dropped the case. A US law prohibits the export of encryption software out of the country. Zimmermann did not do this, but the US government hoped to establish the proposition that posting an encryption program on a BBS or on the Internet constitutes exporting it - in effect, stretching export control into domestic censorship. If the government had won it would have had a chilling effect on the free flow of information on the global network, as well as on everyone's privacy from government snooping.
  • printing discussion — [XEROX PARC] A protracted, low-level, time-consuming, generally pointless discussion of something only peripherally interesting to all.
  • priority scheduling — (operating system)   Processes scheduling in which the scheduler selects tasks to run based on their priority as opposed to, say, a simple round-robin. Priorities may be static or dynamic. Static priorities are assigned at the time of creation, while dynamic priorities are based on the processes' behaviour while in the system. For example, the scheduler may favour I/O-intensive tasks so that expensive requests can be issued as early as possible. A danger of priority scheduling is starvation, in which processes with lower priorities are not given the opportunity to run. In order to avoid starvation, in preemptive scheduling, the priority of a process is gradually reduced while it is running. Eventually, the priority of the running process will no longer be the highest, and the next process will start running. This method is called aging.
  • proctosigmoidoscope — sigmoidoscope.
  • proctosigmoidoscopy — sigmoidoscopy.
  • programmed learning — a progressively monitored, step-by-step teaching method, employing small units of information or learning material and frequent testing, whereby the student must complete or pass one stage before moving on to the next.
  • progressive judaism — Reform Judaism.
  • pseudo-biographical — of or relating to a person's life: He's gathering biographical data for his book on Milton.
  • pseudo-hieroglyphic — noting or pertaining to a script dating from the second millennium b.c. that appears to be syllabic and to represent the Phoenician language and that is inscribed on objects found at Byblos.
  • psychoendocrinology — the study of the relationship between the endocrine system and various symptoms or types of mental illness.
  • radiational cooling — the cooling of the earth's surface and adjacent air, primarily at night, caused by a loss of heat due to surface emission of infrared radiation.
  • radiochromatography — chromatography in which radiolabeled substances on the chromatogram are determined quantitatively or qualitatively by measuring their radioactivity.
  • rag-tag and bobtail — the riffraff; rabble: The ragtag and bobtail of every nation poured into the frontier in search of gold.
  • recording equipment — devices used for sound reproduction
  • recording secretary — an officer charged with keeping the minutes of meetings and responsible for the records.
  • registered disabled — on a local authority register under the Chronically Sick and Disabled Persons Act 1970
  • regular icosahedron — an icosahedron in which each of the faces is an equilateral triangle
  • religious education — religion as school subject
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