21-letter words containing m, a, h, r, s, t

mechanical instrument — a musical instrument, such as a barrel organ or music box, that plays a preselected piece of music by mechanical means
mechanical solidarity — social cohesiveness that is based on shared activities, beliefs, and experiences and is characteristic of simple traditional societies.
megaspore mother cell — a diploid cell in plants that undergoes meiosis to create four haploid megaspores.
mengistu haile mariam — born 1937, Ethiopian political leader: head of state 1977–87; president 1987–91.
modern apprenticeship — an arrangement that allows a school leaver to gain vocational qualifications while being trained in a job
mother-of-pearl glass — an American art glassware having colored glass set into indentations in a thickness of opaque glass, the whole covered with clear glass and etched slightly with acid.
motherwell and wishaw — a burgh in the Motherwell district, in S Scotland.
motivational research — the application of the knowledge and techniques of the social sciences, especially psychology and sociology, to understanding consumer attitudes and behavior: used as a guide in advertising and marketing.
multichannel analyser — an electronic instrument, such as a pulse height analyser, that splits an input waveform into a large number of channels in accordance with a particular parameter of the input
nightmare file system — Pejorative hackerism for Sun's Network File System (NFS). In any nontrivial network of Suns where there is a lot of NFS cross-mounting, when one Sun goes down, the others often freeze up. Some machine tries to access the down one, and (getting no response) repeats indefinitely. This causes it to appear dead to some messages (what is actually happening is that it is locked up in what should have been a brief excursion to a higher spl level). Then another machine tries to reach either the down machine or the pseudo-down machine, and itself becomes pseudo-down. The first machine to discover the down one is now trying both to access the down one and to respond to the pseudo-down one, so it is even harder to reach. This situation snowballs very quickly, and soon the entire network of machines is frozen - worst of all, the user can't even abort the file access that started the problem! Many of NFS's problems are excused by partisans as being an inevitable result of its statelessness, which is held to be a great feature (critics, of course, call it a great misfeature). ITS partisans are apt to cite this as proof of Unix's alleged bogosity; ITS had a working NFS-like shared file system with none of these problems in the early 1970s. See also broadcast storm.
northumberland strait — the part of the Gulf of St. Lawrence that separates Prince Edward Island from New Brunswick and Nova Scotia, in SE Canada. About 200 miles (320 km) long; 9–30 miles (15–48 km) wide.
primary sex character — any of the body structures directly concerned in reproduction, as the testes, ovaries, and external genitalia.
profit-sharing scheme — a scheme employing profit-sharing; a system in which a portion of the net profit of a business is distributed to its employees, usually in proportion to their wages or their length of service
pseudohermaphroditism — an individual having internal reproductive organs of one sex and external sexual characteristics resembling those of the other sex or being ambiguous in nature. Compare hermaphrodite (def 1).
psychomotor agitation — agitation (def 3).
psychomotor-agitation — the act or process of agitating; state of being agitated: She left in great agitation.
psychopharmacotherapy — the use of psychoactive drugs in the symptomatic treatment or control of mental disorders or psychiatric disease.
purchasing department — the group of staff within an organization that is responsible for buying goods or products
s-k reduction machine — An abstract machine defined by Professor David Turner to evaluate combinator expressions represented as binary graphs. Named after the two basic combinators, S and K.
salam-weinberg theory — the electroweak theory.
secure hash algorithm —
sherman antitrust act — an act of Congress (1890) prohibiting any contract, conspiracy, or combination of business interests in restraint of foreign or interstate trade.
short message service — (messaging) (SMS) A message service offered by the GSM digital mobile telephone system. Using SMS, a short alphanumeric message (160 alphanumeric characters) can be sent to a mobile phone to be displayed there, much like in an alphanumeric pager system. The message is buffered by the GSM network until the phone becomes active.
slatwall merchandiser — A slatwall merchandiser is a three-dimensional display unit with grooves cut into its surface into which metal hanging rails can be fixed at various heights.
somatotrophic-hormone — a hormone secreted by the anterior pituitary gland, that stimulates growth in humans.
splice the main brace — to join together or unite (two ropes or parts of a rope) by the interweaving of strands.
steal someone's heart — to cause someone to feel love or affection
sympathetic vibration — a vibration induced by resonance.
the (norman) conquest — the conquering of England by the Normans under William the Conqueror in 1066
the comrades marathon — an annual long-distance race run every year on the 16th of June from Durban to Pietermaritzburg, a distance of approximately 90 kilometres (56 miles)
the maastricht treaty — a treaty on European economic and monetary union agreed by government leaders of the 12 EC states at a meeting in Maastricht in December 1991
the man in the street — If you talk about the man in the street or the man or woman in the street, you mean ordinary people in general.
the supreme sacrifice — the sacrifice of one's life
the women's land army — a unit of women recruited to do agricultural work in the United Kingdom during World War I and World War II
thermal decomposition — Thermal decomposition is the process in which a chemical species breaks down when its temperature is increased.
thermal power station — a power station in which heat is converted into electricity
throw someone a curve — a continuously bending line, without angles.
to lay something bare — If you lay something bare, you uncover it completely so that it can then be seen.
to mix your metaphors — If you mix your metaphors, you use two conflicting metaphors. People do this accidentally, or sometimes deliberately as a joke.
weinberg-salam theory — electroweak theory.
what price something? — what are the chances of something happening now?
youth training scheme — (formerly, in Britain) a scheme, run by the Training Agency, to provide vocational training for unemployed 16–17-year-olds

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