17-letter words containing a, t, r, h
- margaret hamilton — (person) (born 1936-08-17) A computer scientist, systems engineer and business owner, credited with coining the term software engineering. Margaret Hamilton published over 130 papers, proceedings and reports about the 60 projects and six major programs in which she has been involved. In 1965 she became Director of Software Programming at MIT's Charles Stark Draper Laboratory and Director of the Software Engineering Division of the MIT Instrumentation Laboratory, which developed on-board flight software for the Apollo space program. At NASA, Hamilton pioneered the Apollo on-board guidance software that navigated to and landed on the Moon and formed the basis for software used in later missions. At the time, programming was a hands-on, engineering descipline; computer science and software engineering barely existed. Hamilton produced innovations in system design and software development, enterprise and process modelling, development paradigms, formal systems modelling languages, system-oriented objects for systems modelling and development, automated life-cycle environments, software reliability, software reuse, domain analysis, correctness by built-in language properties, open architecture techniques for robust systems, full life-cycle automation, quality assurance, seamless integration, error detection and recovery, man-machine interface systems, operating systems, end-to-end testing and life-cycle management. She developed concepts of asynchronous software, priority scheduling and Human-in-the-loop decision capability, which became the foundation for modern, ultra-reliable software design. The Apollo 11 moon landing would have aborted when spurious data threatened to overload the computer, but thanks to the innovative asynchronous, priority based scheduling, it eliminated the unnecessary processing and completed the landing successfully. In 1986, she founded Hamilton Technologies, Inc., developed around the Universal Systems Language and her systems and software design paradigm of Development Before the Fact (DBTF).
- margaret thatcher — Margaret (Hilda) 1925–2013, British political leader: prime minister 1979–90.
- mark of the beast — the mark put on the forehead of those who worship the beast, the symbol of opposition to God.
- market researcher — a person who carries out market research
- martha's vineyard — an island off SE Massachusetts: summer resort. About 100 sq. mi. (259 sq. km).
- mass spectrograph — a mass spectroscope for recording a mass spectrum on a photographic plate.
- massage therapist — sb who gives body rubs
- mechanoelectrical — Describing the production of electricity by mechanical motion; especially in a transducer.
- memetic algorithm — (algorithm) A genetic algorithm or evolutionary algorithm which includes a non-genetic local search to improve genotypes. The term comes from the Richard Dawkin's term "meme". One big difference between memes and genes is that memes are processed and possibly improved by the people that hold them - something that cannot happen to genes. It is this advantage that the memetic algorithm has over simple genetic or evolutionary algorithms. These algorithms are useful in solving complex problems, such as the "Travelling Salesman Problem," which involves finding the shortest path through a large number of nodes, or in creating artificial life to test evolutionary theories. Memetic algorithms are one kind of metaheuristic. (07 July 1997)
- mental arithmetic — sums done in your head
- merchant of death — a company, nation, or person that sells military arms on the international market, usually to the highest bidder and without scruple or regard for political ramifications.
- merchant shipping — shipping which is involved in commerce (rather than defence, etc)
- mesembryanthemums — Plural form of mesembryanthemum.
- methyltransferase — any of a class of enzymes that catalyze the transfer of methyl groups from one molecule to another.
- microphanerophyte — any shrub or tree having a height of 2 to 8 metres
- microphotographic — Relating to microphotography.
- mischaracterizing — Present participle of mischaracterize.
- miss lonelyhearts — a novel (1933) by Nathanael West.
- mitochondrial dna — DNA found in mitochondria, which contains some structural genes and is generally inherited only through the female line
- modern pentathlon — an athletic contest consisting of five different events: horse riding with jumps, fencing with electric épée, freestyle swimming, pistol shooting, and cross-country running
- modulo arithmetic — modular arithmetic
- monarch butterfly — a large, deep-orange butterfly, Danaus plexippus, having black and white markings, the larvae of which feed on the leaves of milkweed.
- monochromatically — of or having one color.
- montagu's harrier — a brownish European bird of prey, Circus pygargus, with long narrow wings and a long tail: family Accipitridae (hawks, harriers, etc)
- month after month — every month
- more than usually — You use more than usually to show that something shows even more of a particular quality than it normally does.
- mother of vinegar — mother2 .
- mount fairweather — a mountain in W North America, on the border between Alaska and British Columbia. Height: 4663 m (15 300 ft)
- myasthenia gravis — a disease of impaired transmission of motor nerve impulses, characterized by episodic muscle weakness and easy fatigability, especially of the face, tongue, neck, and respiratory muscles: caused by autoimmune destruction of acetylcholine receptors. Abbreviation: MG.
- nakhon ratchasima — a city in central Thailand.
- nathaniel currier — Nathaniel, 1813–88, U.S. lithographer. Compare Ives (def 4).
- national heritage — country's cultural legacy
- national seashore — an area of seacoast set aside and maintained by the U.S. government for purposes of recreation or wildlife study.
- natural harmonics — harmonics of a note produced on a stringed instrument by lightly touching an open or unstopped sounded string.
- natural hat trick — three goals scored in succession by one player in one game or one period.
- natural logarithm — a logarithm having e as a base. Symbol: ln.
- near-earth object — a comet or asteroid pushed by the gravitational attraction of nearby planets into an orbit that allows it to enter the earth's orbit and thereby pose a danger of collision. Abbreviation: NEO.
- neath port talbot — a county borough in S Wales, created from part of West Glamorgan in 1996. Administrative centre: Port Talbot. Pop: 135 300 (2003 est). Area: 439 sq km (169 sq miles)
- nephelometrically — By means of nephelometry.
- neuropathological — (medicine) Of, pertaining to, or arising from neuropathology, the pathology of nerve tissue.
- neuropsychiatrist — A medical doctor specializing in neuropsychiatry; a medical doctor dealing with disorders that have both neurological and psychiatric features.
- night after night — every night or for many successive nights
- nikita khrushchev — Nikita S(ergeyevich) [ni-kee-tuh sur-gey-uh-vich;; Russian nyi-kyee-tuh syir-gye-yuh-vyich] /nɪˈki tə sɜrˈgeɪ ə vɪtʃ;; Russian nyɪˈkyi tə syɪrˈgyɛ yə vyɪtʃ/ (Show IPA), 1894–1971, Russian political leader: premier of the U.S.S.R. 1958–64.
- nitroxanthic acid — picric acid.
- non-authoritarian — favoring complete obedience or subjection to authority as opposed to individual freedom: authoritarian principles; authoritarian attitudes.
- non-authoritative — having due authority; having the sanction or weight of authority: an authoritative opinion.
- non-thermoplastic — soft and pliable when heated, as some plastics, without any change of the inherent properties.
- normal orthogonal — orthonormal.
- north lanarkshire — a council area of central Scotland: consists mainly of the NE part of the historical county of Lanarkshire; formerly (1974–96) part of Strathclyde Region: engineering and metalworking industries. Administrative centre: Motherwell. Pop: 321 820 (2003 est). Area: 1771 sq km (684 sq miles)
- north miami beach — a city in SE Florida.