30-letter words containing a, h, o, l, d
- adenosine cyclic monophosphate — cyclic AMP.
- advanced technology attachment — (storage, hardware, standard) (ATA, AT Attachment or "Integrated Drive Electronics", IDE) A disk drive interface standard based on the IBM PC ISA 16-bit bus but also used on other personal computers. ATA specifies the power and data signal interfaces between the motherboard and the integrated disk controller and drive. The ATA "bus" only supports two devices - master and slave. ATA drives may in fact use any physical interface the manufacturer desires, so long as an embedded translator is included with the proper ATA interface. ATA "controllers" are actually direct connections to the ISA bus. Originally called IDE, the ATA interface was invented by Compaq around 1986, and was developed with the help of Western Digital, Imprimis, and then-upstart Conner Peripherals. Efforts to standardise the interface started in 1988; the first draft appeared in March 1989, and a finished version was sent to ANSI group X3T10 (who named it "Advanced Technology Attachment" (ATA)) for ratification in November 1990. X3T10 later extended ATA to Advanced Technology Attachment Interface with Extensions (ATA-2), followed by ATA-3 and ATA-4.
- college of advanced technology — (formerly) a college offering degree or equivalent courses in technology, with research facilities. In the mid-1960s these were granted university status
- computational adequacy theorem — This states that for any program (a non-function typed term in the typed lambda-calculus with constants) normal order reduction (outermost first) fails to terminate if and only if the standard semantics of the term is bottom. Moreover, if the reduction of program e1 terminates with some head normal form e2 then the standard semantics of e1 and e2 will be equal. This theorem is significant because it relates the operational notion of a reduction sequence and the denotational semantics of the input and output of a reduction sequence.
- death valley national monument — a national monument in E California, including most of Death Valley: site of Badwater, lowest point in the U.S., 282 feet (86 meters) below sea level. 2980 sq. mi. (7718 sq. km).
- dichlorodiphenyldichloroethane — (organic chemistry) An organochlorine insecticide that is a metabolite of DDT.
- federal housing administration — a governmental agency created in 1934 to help homeowners finance the purchase and repair of their homes and to stimulate housing construction. Abbreviation: FHA.
- gesell developmental schedules — a rating system designed to evaluate the cognitive, motor, language, and social development of pre-school-age children by observing their performance on developmental tasks, as reaching, walking, and using sentences.
- gonadotropin releasing hormone — Biochemistry. a peptide hormone, produced by the hypothalamus, that stimulates the anterior lobe of the pituitary gland to secrete luteinizing hormone and follicle-stimulating hormone.
- gonadotropin-releasing hormone — Biochemistry. a peptide hormone, produced by the hypothalamus, that stimulates the anterior lobe of the pituitary gland to secrete luteinizing hormone and follicle-stimulating hormone.
- gram-schmidt orthogonalization — a process for constructing an orthogonal basis for a Euclidean space, given any basis for the space.
- hide your light under a bushel — If you hide your light under a bushel, you keep your abilities or good qualities hidden from other people.
- knights of the lambda-calculus — A semi-mythical organisation of wizardly LISP and Scheme hackers. The name refers to a mathematical formalism invented by Alonzo Church, with which LISP is intimately connected. There is no enrollment list and the criteria for induction are unclear, but one well-known LISPer has been known to give out buttons and, in general, the *members* know who they are.
- leader of the house of commons — a member of the Government having primary authority in initiating legislative business
- light at the end of the tunnel — something that makes things visible or affords illumination: All colors depend on light.
- parallel random-access machine — (parallel) (PRAM) An idealised parallel processor consisting of P processors, unbounded shared memory, and a common clock. Each processor is a random-access machine (RAM) consisting of R registers, a program counter, and a read-only signature register. Each RAM has an identical program, but the RAMs can branch to different parts of the program. The RAMs execute the program synchronously one instruction in one clock cycle. See also pm2.
- pedagogic algorithmic language — ["PAL - A Language for Teaching Programming Linguistics", A. Evans Jr, Proc ACM 23rd Natl Conf, Brandon/Systems Press (1968)].
- the life and soul of the party — If you refer to someone as the life and soul of the party, you mean that they are very lively and entertaining on social occasions, and are good at mixing with people. In American English, you usually say that they are the life of the party.
- to keep body and soul together — If you keep body and soul together, you have enough money to provide what you need to live.
- to lend your name to something — If you lend your name to something such as a cause or project, you support it.
- to look like death warmed over — to look terrible
- to put your cards on the table — If you put or lay your cards on the table, you deal with a situation by speaking openly about your feelings, ideas, or plans.
- united nations children's fund — UNICEF.
- unplanned shutdown of refinery — An unplanned shutdown of refinery is when processes in a refinery are stopped unexpectedly, often because something hazardous has happened.
- upright database technology ab — (company) The Swedish company that developed the Mimer SQL database.
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