24-letter words containing c, l, a, r
- compact fluorescent lamp — A compact fluorescent lamp is a small fluorescent lamp (= a tubular light bulb coated with phosphor which produces a bright light) that has a lamp life that is much longer than incandescent lamps.
- compensatory lengthening — the lengthening of a vowel when a following consonant is weakened or lost, as the change from Old English niht [nikht] /nɪxt/ (Show IPA) to night [nahyt] /naɪt/ (Show IPA) with loss of [kh] /x/ (Show IPA) and lengthening of [i] /ɪ/ (Show IPA) to a vowel that eventually became [ahy] /aɪ/ (Show IPA).
- compiler target language — (CTL) The intermediate language used by the ALICE parallel machine.
- complementary wavelength — the wavelength of monochromatic light that could be mixed in suitable proportions with a given coloured light so as to produce some specified achromatic light
- completely regular space — a topological space in which, for every point and a closed set not containing the point, there is a continuous function that has value 0 at the given point and value 1 at each point in the closed set.
- complexometric titration — a titration in which a coloured complex is formed, usually by the use of a chelating agent, such as EDTA, the end point being marked by a sharp decrease in the concentration of free metal ions
- compressed petroleum gas — a gas liquefied by compression, consisting of flammable hydrocarbons, as propane and butane, obtained as a by-product from the refining of petroleum or from natural gas: used chiefly as a domestic fuel in rural areas, as an industrial and motor fuel, and in organic synthesis, especially of synthetic rubber.
- computer design language — (language) An ALGOL-like language for computer design.
- confederate memorial day — a day set aside in the South to pay tribute to those who served with the Confederate forces during the American Civil War. It is observed on April 26 in Alabama, Florida, Georgia, and Mississippi; on May 10 in North Carolina and South Carolina; on May 30 in Virginia; and on June 3 in Kentucky, Louisiana, and Tennessee.
- congestive heart failure — heart failure characterized by weakness, breathlessness, and abnormal congestion in the circulatory system, esp. in the lungs or lower legs
- consonantal alliteration — the use of the same consonant at the beginning of each word or each stressed syllable in a line of verse, as in around the rock the ragged rascal ran
- constant linear velocity — (storage) (CLV) A way of controlling the rotation of the disks in a disk drive in which the linear velocity of the disk surface relative to the read/write heads is kept constant. In order to achieve constant linear velocity, the disk must rotate faster (at a higher angular velocity) when reading or writing tracks closer to the centre. Having a constant linear read/write speed along the track means that the electrical signal to and from the heads has a constant data rate (bits per second), thus simplifying the timing of the drive electronics somewhat. However, rotating at less than the maximum possible rate sacrifices some potential performance compared to the alternative, constant angular velocity. Also, varying the rate causes more vibration and consumes more energy.
- constantinopolitan creed — a formal statement of the chief tenets of Christian belief, adopted by the first Nicene Council.
- consultant paediatrician — a paediatrician who has attained the rank of consultant
- 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.
- curiosity killed the cat — You say 'Curiosity killed the cat' in order to tell someone that they should not try to find out about something which does not concern them.
- data structures language — (language) A dialect of MAD with extensions for lists and graphics, on Philco 212.
- decentralized processing — the use of word processing or data processing units in stand-alone or localized situations
- 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.
- dejeuner a la fourchette — a luncheon or light meal, especially one at which eggs, meat, etc., are served.
- delayed control-transfer — (architecture) A technique used on the SPARC processor to reduce the effect of pipeline breaks by executing the instruction after a branch instruction (the "delay instruction" in the "delay slot"). If there is no useful instruction which can be placed in the delay slot then the "annul bit" on the control transfer instruction can be set, preventing execution of the delay instruction (unless the control transfer is conditional and is taken). Annulled branches are indicated in SPARC assembler language by appending ",A" to the operation code. For example, LOOP: ... CMP %L0,10 BLE,A LOOP ADD %L2, %L3, #L4 If the delay instruction is also a control transfer instruction then it gets more complicated. Both control transfer instructions are executed (but not the following instruction) and, assuming they are both taken, control is transferred briefly to the destination of the first and then immediately to the destination of the second.
- descriptive bibliography — the aspect of bibliography concerned with the close physical study and description of books and other works.
- 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
- 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.
- differential coefficient — derivative (def 6).
- digital switched network — (communications) (DSN) The completely digital version of the PSTN.
- diphenylaminechlorarsine — adamsite.
- display screen equipment — Visual Display Unit
- 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.
- double overhead camshaft — a pair of overhead camshafts, one to operate the intake valves and the other to operate the exhaust valves. Abbreviation: DOHC.
- double-crested cormorant — a North American cormorant, Phalacrocorax auritus, having tufts of black and white feathers on the sides of the head.
- 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.
- electrocardiographically — By means of electrocardiography.
- 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 configuration — the arrangement of electrons in the orbitals of an atom or molecule
- 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
- electronic whiteboarding — audiographic teleconferencing
- 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
- equivalence partitioning — equivalence class partitioning
- evolutionary computation — Computer-based problem solving systems that use computational models of evolutionary processes as the key elements in design and implementation. A number of evolutionary computational models have been proposed, including evolutionary algorithms, genetic algorithms, the evolution strategy, evolutionary programming, and artificial life.
- 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 reserve district — the district served by a certain Federal Reserve Bank.
- federal trade commission — FTC.
- ferdinand lewis alcindor — (Ferdinand) Lew(is, Jr.) original name of Abdul-Jabbar.
- fight or flight reaction — the response of the sympathetic nervous system to a stressful event, preparing the body to fight or flee, associated with the adrenal secretion of epinephrine and characterized by increased heart rate, increased blood flow to the brain and muscles, raised sugar levels, sweaty palms and soles, dilated pupils, and erect hairs.
- fight-or-flight reaction — the response of the sympathetic nervous system to a stressful event, preparing the body to fight or flee, associated with the adrenal secretion of epinephrine and characterized by increased heart rate, increased blood flow to the brain and muscles, raised sugar levels, sweaty palms and soles, dilated pupils, and erect hairs.