24-letter words containing i, n, s, c, r
- cooperative multitasking — (parallel, operating system) A form of multitasking where it is the responsibility of the currently running task to give up the processor to allow other tasks to run. This contrasts with pre-emptive multitasking where the task scheduler periodically suspends the running task and restarts another. Cooperative multitasking requires the programmer to place calls at suitable points in his code to allow his task to be descheduled which is not always easy if there is no obvious top-level main loop or some routines run for a long time. If a task does not allow itself to be descheduled all other tasks on the system will appear to "freeze" and will not respond to user action. The advantage of cooperative multitasking is that the programmer knows where the program will be descheduled and can make sure that this will not cause unwanted interaction with other processes. Under pre-emptive multitasking, the scheduler must ensure that sufficient state for each process is saved and restored that they will not interfere. Thus cooperative multitasking can have lower overheads than pre-emptive multitasking because of the greater control it offers over when a task may be descheduled. Cooperative multitasking is used in RISC OS, Microsoft Windows and Macintosh System 7.
- correspondence principle — the principle that the laws of quantum mechanics and of any new theory that may be developed reduce to the laws of Newtonian mechanics and electromagnetic theory when applied to systems in which Planck's constant can be regarded as negligible, wavelengths are comparatively small, dimensions are relatively large, etc.
- cross/step over the line — If you say that someone has crossed the line or has stepped over the line, you mean that they have behaved in a way that is considered unacceptable.
- crown-of-thorns starfish — a starfish, Acanthaster planci, that feeds on living coral polyps, causing erosion and destruction of coral reefs.
- data encryption standard — (DES) The NBS's popular, standard encryption algorithm. It is a product cipher that operates on 64-bit blocks of data, using a 56-bit key. It is defined in FIPS 46-1 (1988) (which supersedes FIPS 46 (1977)). DES is identical to the ANSI standard Data Encryption Algorithm (DEA) defined in ANSI X3.92-1981. DES has been implemented in VLSI. SunOS provides a des command which can make use of DES hardware if fitted. Neither the software nor the hardware are supposed to be distributed outside the USA.
- decentralized processing — the use of word processing or data processing units in stand-alone or localized situations
- decision support systems — (application, tool) (DSS) Software tools to help with decision support.
- definite relative clause — a relative clause with a definite relative pronoun as subordinating word, as that they said in We heard the things that they said.
- destructive distillation — the decomposition of a complex substance, such as wood or coal, by heating it in the absence of air and collecting the volatile products
- destructive interference — the interference of two waves of equal frequency and opposite phase, resulting in their cancellation where the negative displacement of one always coincides with the positive displacement of the other.
- detective superintendent — a police officer who investigates crime and who ranks above a detective chief inspector but below a detective chief superintendent
- dictionary and thesaurus — a dictionary that includes a separate section listing terms with synonyms and antonyms. An online reference site, such as Reference.com, provides immediate electronic access to several dictionaries and a thesaurus as well as to other reference sources.
- differential association — a theory that criminal and deviant behavior is learned through close and frequent association with criminal or deviant behavior patterns, norms, and values.
- digital switched network — (communications) (DSN) The completely digital version of the PSTN.
- diminished seventh chord — a chord often used in an enharmonic modulation and very common in modern music, esp jazz and pop music, consisting of a diminished triad with an added diminished seventh above the root
- diphenylaminechlorarsine — adamsite.
- display screen equipment — Visual Display Unit
- disturbance of the peace — a malicious and willful intrusion on the peace and quiet of a community or neighbourhood
- domestic relations court — in some states, a court with jurisdiction over matters involving relations within the family or household, as between husband and wife or parent and child
- domestic-relations court — court of domestic relations.
- ductal carcinoma in situ — a form of breast cancer originating in the breast itself rather than spreading from another site
- ecole normale superieure — (body) (ENS) A higher education and research institution in Paris, France.
- effective number of bits — (hardware) (ENOB) An indication of the quality of an analog to digital converter. The measurement is related to the test frequency and the signal-to-noise ratio.
- effective sound pressure — the square root of the mean of the squares of the sound pressures of a sound wave, measured at a given point over a certain time interval.
- electromagnetic spectrum — the complete range of electromagnetic radiation from the longest radio waves (wavelength 105 metres) to the shortest gamma radiation (wavelength 10–13 metre)
- electronic point of sale — a computerized system for recording sales in retail shops, using a laser scanner at the cash till to read bar codes on the packages of the items sold
- emotional roller coaster — a situation or experience that alternates between making you feel excited, exhilarated, or happy and making you feel sad, disappointed, or desperate
- endotracheal anaesthesia — a method of administering gaseous anaesthetics to animals through a tube inserted into the trachea
- explicit type conversion — (programming) (Or "cast" in C and elsewhere). A programming construct (syntax) to specify that an expression's value should be converted to a different type. For example, in C, to convert an integer (usually 32 bits) to a char (usually 8 bits) we might write: int i = 42; char *p = &buf; *p = (char) i; The expression "(char)" (called a "cast") converts i's value to char type. Casts (including this one) are often not strictly necessary, due to automatic coercions performed by the compiler, but can be used to make the conversion obvious and to avoid warning messages.
- extra-sensory perception — Extra-sensory perception means knowing without using your ordinary senses such as sight and hearing. Some people believe this is possible. The abbreviation ESP is also used.
- failure-directed testing — (programming) (Or "heuristics testing") Software testing based on the knowledge of the types of errors made in the past that are likely for the system under test.
- federal power commission — FPC.
- federal trade commission — FTC.
- ferdinand lewis alcindor — (Ferdinand) Lew(is, Jr.) original name of Abdul-Jabbar.
- fish protein concentrate — an odorless and tasteless high-protein food additive made from ground fish and suitable for human consumption. Abbreviation: FPC.
- floating-point specratio — SPECfp92
- geographical determinism — the theory that human activity is determined by geographical conditions
- glycogen storage disease — any of several inherited disorders of glycogen metabolism that result in excess accumulation of glycogen in various organs of the body.
- graduated pension scheme — (between 1961 and 1975) an earnings-related pension scheme which was based on the amount of an employee's National Insurance contributions
- graphical user interface — a software interface designed to standardize and simplify the use of computer programs, as by using a mouse to manipulate text and images on a display screen featuring icons, windows, and menus.
- grin like a cheshire cat — a constantly grinning cat in Lewis Carroll's Alice's Adventures in Wonderland.
- high-fructose corn syrup — corn syrup to which enzymes have been added to change some of the glucose to fructose, making the product sweeter than regular corn syrup. Abbreviation: HFCS.
- hoop-petticoat narcissus — petticoat narcissus.
- immunofluorescence assay — a diagnostic blood test using the technique of immunofluorescence. Abbreviation: IFA.
- implicit type conversion — (programming) (Or "coercion") The abilty of some compilers to automatically insert type conversion functions where an expression of one type is used in a context where another type is expected. A common example is coercion of integers to reals so that an expression like sin(1) is compiled as sin(integerToReal(1)) where sin is of type Real -> Real. A coercion is usually performed automatically by the compiler whereas a cast is an explicit type conversion inserted by the programmer. See also subtype.
- in someone's good graces — elegance or beauty of form, manner, motion, or action: We watched her skate with effortless grace across the ice. Synonyms: attractiveness, charm, gracefulness, comeliness, ease, lissomeness, fluidity. Antonyms: stiffness, ugliness, awkwardness, clumsiness; klutziness.
- incomplete metamorphosis — insect development, as in the grasshopper and cricket, in which the change is gradual and characterized by the absence of a pupal stage. Compare complete metamorphosis.
- industrial correspondent — a journalist who specializes in reporting the industrial news
- instructional technology — (education) Design, development, use, management and evaluation of process and resources for learning. Instructional technology aims to promote the application of validated, practical procedures in the design and delivery of instruction. It is often defined either in terms of media and other technology used (e.g. audiovisual media and equipment and computers), or in terms of a systematic process which encompasses instructional design, development, delivery and evaluation.
- internal revenue service — the division of the U.S. Department of the Treasury that collects internal revenue, including income taxes and excise taxes, and that enforces revenue laws.