29-letter words containing m, a, c, r, o, l
- (a game) not worth the candle — (a game) with stakes not sufficient to pay for the lights
- a sledgehammer to crack a nut — If you say that someone is using a sledgehammer to crack a nut, you mean that they are using stronger measures than are really necessary to solve a problem.
- accelerator mass spectrometry — a type of mass spectrometry used in radiocarbon dating in which the proportion of carbon isotopes is counted directly, as contrasted with the indirect Geiger counter method, using an accelerator that drastically reduces the quantity of datable material required.
- air material command compiler — (language) (AIMACO) A modification of FLOW-MATIC. AIMACO was supplanted by COBOL.
- algorithmic assembly language — (language) (ALIAS) A machine oriented variant of BLISS. ALIAS was implemented in BCPL for the PDP-9.
- amyotrophic lateral sclerosis — a form of motor neurone disease in which degeneration of motor tracts in the spinal cord causes progressive muscular paralysis starting in the limbs
- antarctic circumpolar current — an ocean current flowing from west to east around Antarctica.
- antenuptial marriage contract — a contract made between two people before they marry, agreeing on the distribution of their assets in the event of divorce
- anti-saloon league of america — a national organization, founded in 1893 in Ohio, advocating the prohibition of the manufacture and sale of alcoholic beverages.
- application program interface — (programming) (API, or "application programming interface") The interface (calling conventions) by which an application program accesses operating system and other services. An API is defined at source code level and provides a level of abstraction between the application and the kernel (or other privileged utilities) to ensure the portability of the code. An API can also provide an interface between a high level language and lower level utilities and services which were written without consideration for the calling conventions supported by compiled languages. In this case, the API's main task may be the translation of parameter lists from one format to another and the interpretation of call-by-value and call-by-reference arguments in one or both directions.
- assembly language for multics — (language) (ALM) The assembly language of the GE-645 in which critical portions of the Multics kernel were written.
- binary compatibility standard — (programming, standard) (BCS) The ABI of 88open.
- cardiopulmonary resuscitation — an emergency measure to revive a patient whose heart has stopped beating, in which compressions applied with the hands to the patient's chest are alternated with mouth-to-mouth respiration
- community correctional center — (in the US) a detention centre
- compact disc read-only memory — (storage) (CD-ROM) A non-volatile optical data storage medium using the same physical format as audio compact discs, readable by a computer with a CD-ROM drive. CD-ROM is popular for distribution of large databases, software and especially multimedia applications. The maximum capacity is about 600 megabytes. A CD can store around 640 megabytes of data - about 12 billion bytes per pound weight. CD-ROM drives are rated with a speed factor relative to music CDs (1x or 1-speed which gives a data transfer rate of 150 kilobytes per second). 12x drives were common in April 1997. Above 12x speed, there are problems with vibration and heat. Constant angular velocity (CAV) drives give speeds up to 20x but due to the nature of CAV the actual throughput increase over 12x is less than 20/12. 20x was thought to be the maximum speed due to mechanical constraints but on 1998-02-24, Samsung Electronics introduced the SCR-3230, a 32x CD-ROM drive which uses a ball bearing system to balance the spinning CD-ROM in the drive to reduce noise. CD-ROM drives may connect to an IDE interface, a SCSI interface or a propritary interface, of which there are three - Sony, Panasonic, and Mitsumi. Most CD-ROM drives can also play audio CDs. There are several formats used for CD-ROM data, including Green Book CD-ROM, White Book CD-ROM and Yellow Book CD-ROM. ISO 9660 defines a standard file system, later extended by Joliet. See also Compact Disc Recordable, Digital Versatile Disc.
- compatible timesharing system — (operating system) (CTSS) One of the earliest (1963) experiments in the design of interactive time-sharing operating systems. CTSS was ancestral to Multics, Unix, and ITS. It was developed at the MIT Computation Center by a team led by Fernando J. Corbato. CTSS ran on a modified IBM 7094 with a second 32K-word bank of memory, using two 2301 drums for swapping. Remote access was provided to up to 30 users via an IBM 7750 communications controller connected to dial-up modems. The name ITS (Incompatible time-sharing System) was a hack on CTSS, meant both as a joke and to express some basic differences in philosophy about the way I/O services should be presented to user programs.
- compound a felony (or crime) — to agree, for a bribe or repayment, not to inform about or prosecute for a felony (or crime): it is an illegal act
- computer programming language — (spelling) A somewhat redundant term for programming language.
- computerized axial tomography — the process of producing a CAT scan.
- conservation of lepton number — the principle that the total lepton number remains constant in any process involving elementary particles.
- conversational monitor system — Virtual Machine/Conversational Monitor System
- curvilinear coordinate system — a system of coordinates in which the coordinates are determined by three families of surfaces, usually perpendicular.
- customer relations department — a department of a company concerned with customer relations
- cyclotrimethylenetrinitramine — RDX.
- digital equipment corporation — (company, hardware) (DEC) A computer manufacturer and software vendor. Before the killer micro revolution of the late 1980s, hackerdom was closely symbiotic with DEC's pioneering time-sharing machines. The first of the group of hacker cultures nucleated around the PDP-1 (see TMRC). Subsequently, the PDP-6, PDP-10, PDP-20, PDP-11 and VAX were all foci of large and important hackerdoms and DEC machines long dominated the ARPANET and Internet machine population. The first PC from DEC was a CP/M computer called Rainbow, announced in 1981-82. DEC was the technological leader of the minicomputer era (roughly 1967 to 1987), but its failure to embrace microcomputers and Unix early cost it heavily in profits and prestige after silicon got cheap. However, the microprocessor design tradition owes a heavy debt to the PDP-11 instruction set, and every one of the major general-purpose microcomputer operating systems so far (CP/M, MS-DOS, Unix, OS/2) were either genetically descended from a DEC OS, or incubated on DEC hardware or both. Accordingly, DEC is still regarded with a certain wry affection even among many hackers too young to have grown up on DEC machines. The contrast with IBM is instructive. Quarterly sales $3923M, profits -$1746M (Aug 1994). DEC was taken over by Compaq Computer Corporation in 1998. In 2002 Compaq was in turn acquired by Hewlett-Packard who sold off parts of Digital Equipment Corporation to Intel and absorbed the rest. The Digital logo is no longer used.
- distributed logic programming — (language) (DLP) A logic programming language similar to Prolog, combined with parallel object orientation similar to POOL. DLP supports distributed backtracking over the results of a rendezvous between objects. Multi-threaded objects have autonomous activity and may simultaneously evaluate method calls.
- electromagnetic compatibility — (hardware, testing) (EMC) The extent to which a piece of hardware will tolerate electrical interference from other equipment, and will interfere with other equipment. There are strict legal EMC requirements for the sale of any electrical or electronic hardware in most countries, although the actual standards differ. See, for example, EMCNet. See also Electrostatic Discharge, Radio Frequency Interference.
- employee stock ownership plan — a programme offered to employees that enables them to buy stocks in the company and thus play a role in its management
- esoteric programming language — (language, humour) (esolang) An intentionally unconventional computer programming language designed not for practical use but, rather, to experiment with weird ideas, to be hard to program in or as a joke.
- familial hypercholesterolemia — an inherited metabolic disorder caused by a lack or malfunction of receptors for the low-density lipoproteins that activate removal of cholesterol from the blood. Abbreviation: FH.
- genetically modified organism — genetically modified organism: an organism or microorganism whose genetic material has been altered by means of genetic engineering.
- incremental constraint solver — A system in which a constraint solver is given constraints one at a time by an inference engine (as is found in Prolog). The solver adds the new constraint to an initially empty set of solved constraints. If the new constraint is consistent with the solved constraints it will be added to the set. If it was inconsistent, the inference engine backtracks. This is the basis of Constraint Logic Programming.
- individual retirement account — a savings plan that offers tax advantages to an individual depositor to set aside money for retirement. Abbreviation: IRA.
- like taking candy from a baby — very easy to accomplish
- lotus development corporation — (company) A software company who produced Lotus 1-2-3, the Symphony spreadsheet and Lotus Notes for the IBM PC. Disliked by the League for Programming Freedom on account of their lawsuits. Quarterly sales $224M, profits $10M (Aug 1994). Telephone: +1 (617) 225 1284.
- man that corrupted hadleyburg — a short story (1900) by Mark Twain.
- mark-sweep garbage collection — Each cell has a bit reserved for marking which is clear initially. During garbage collection all active cells are traced from the root and marked. Then all cells are examined. Unmarked cells are freed.
- mecklenburg-western pomerania — a state in NE Germany. 8842 sq. mi. (22,900 sq. km). Capital: Schwerin.
- microelectromechanical system — (hardware) (MEMS) The integration of mechanical structures (moving parts) with microelectronics. MEMS devices are "custom" designed for a purpose which requires a mechanical action to be controlled by a computer. Applications include sensors, medical devices, process controls. See also nanotechnology.
- modified frequency modulation — (storage) (MFM, Modified FM, or sometimes "Multiple Frequency Modulation") A modification to the original frequency modulation scheme for encoding data on magnetic disks. MFM allows more than 1 symbol per flux transition (up to 3), giving greater density of data. It is used with a data rate of between 250-500 kbit/s on industry standard 3.5" and 5.25" low and high density diskettes, and up to 5 Mbit/s on ST-506 hard disks. Except for 1.44 MB floppy disks, this encoding is obsolete. Other data encoding schemes include GCR, FM, RLL. See also: PRML.
- mordovian autonomous republic — an autonomous republic in the Russian Federation in Europe. 9843 sq. mi. (25,493 sq. km). Capital: Saransk.
- multics relational data store — (database) (MRDS) The first commercial relational database, implemented as part of Multics by Jim Weeldreyer and Oris Friesen of Honeywell Phoenix in about 1977. MRDS included a report writer called LINUS written by Jim Falksen.
- multiprotocol label switching — (networking) (MPLS) A packet switching protocol developed by the IETF. Initially developed to improve switching speed, other benefits are now seen as being more important. MPLS adds a 32-bit label to each packet to improve network efficiency and to enable routers to direct packets along predefined routes in accordance with the required quality of service. The label is added when the packet enters the MPLS network, and is based on an analysis of the packet header. The label contains information on the route along which the packet may travel, and the forwarding equivalence class (FEC) of the packet. Packets with the same FEC are routed through the network in the same way. Routers make forwarding decisions based purely on the contents of the label. This simplifies the work done by the router, leading to an increase in speed. At each router, the label is replaced with a new label, which tells the next router how to forward the packet. The label is removed when the packet leaves the MPLS network. Modern ASIC-based routers can look up routes fast enough to make the speed increase less important. However, MPLS still has some benefits. The use of FECs allows QoS levels to be guaranteed, and MPLS allows IP tunnels to be created through a network, so that VPNs can be implemented without encryption.
- nuclear regulatory commission — an independent agency, created in 1975, that licenses and regulates the nonmilitary use of nuclear energy. Abbreviation: NRC.
- object compatibility standard — (OCS) An 88open standard for compilers and linkers.
- optimal flexible architecture — (database) (OFA) Recommendations for logical and physical allocation of database files to disks. The OFA principles can be summarised as: isolate redo, rollback, temp, data and index files as much as possible. OFA can be combined with SAME (Stripe And Mirror Everything).
- programmable logic controller — (hardware) (PLC) A device used to automate monitoring and control of industrial plant. Can be used stand-alone or in conjunction with a SCADA or other system.
- quantum-dot cellular automata — (electronics, computing) (QCA) Quantum logic circuits created by orientating pairs of quantum cells so that their relative positions determine their affect on each other. This is functionally analogous but structurally different from how individual gates in integrated circuits are combined to create logical and memory circuitry. The advantages of quantum-dot cellular automata over conventional circuitry are extremely small size/high density, low power requirements, and potentially high processing speeds. Disadvantages (in 2000) are difficulty of fabrication and low yield. See also: quantum cell wire.
- rapid application development — (programming) (RAD) A loose term for any software life-cycle designed to give faster development and better results and to take maximum advantage of recent advances in development software. RAD is associated with a wide range of approaches to software development: from hacking away in a GUI builder with little in the way of analysis and design to complete methodologies expanding on an information engineering framework. Some of the current RAD techniques are: CASE tools, iterative life-cycles, prototyping, workshops, SWAT teams, timebox development, and Re-use of applications, templates and code.
- recommended dietary allowance — the amount of an essential nutrient, as a vitamin or mineral, that has been established by the Food and Nutrition Board of the National Academy of Sciences as adequate to meet the average daily nutritional needs of most healthy persons according to age group and sex. Abbreviation: RDA.
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