30-letter words containing d, e, c, a, h, y
- 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.
- british indian ocean territory — a UK Overseas Territory in the Indian Ocean: consists of the Chagos Archipelago (formerly a dependency of Mauritius) and formerly included (until 1976) Aldabra, Farquhar, and Des Roches, now administratively part of the Seychelles. Diego Garcia is an important US naval base
- 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.
- cross my heart and hope to die — promise
- dichlorodiphenyldichloroethane — (organic chemistry) An organochlorine insecticide that is a metabolite of DDT.
- erythrocyte sedimentation rate — the rate at which red blood cells settle in a vertical tube, used to detect the presence of disease; ESR
- industry standard architecture — (architecture, standard) (ISA) A bus standard for IBM compatibles that extends the XT bus architecture to 16 bits. It also allows for bus mastering although only the first 16 MB of main memory is available for direct access. In reference to the XT bus architecture it is sometimes referred to as "AT bus architecture". Compare EISA, MCA.
- magnetohydrodynamic generation — the production of electric power without the use of rotating machinery by passing a plasma through a magnetic field.
- munchausen's syndrome by proxy — a mental disorder in which an individual derives emotional satisfaction from inflicting injury on others and then subjecting them to medical treatment
- 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.
- transdermal therapeutic system — A transdermal therapeutic system is a method of delivering medication into the bloodstream through the skin, usually in the form of a medicated patch.
- upright database technology ab — (company) The Swedish company that developed the Mimer SQL database.
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