18-letter words containing t, s, h, o, m
- median lethal dose — the quantity of a lethal substance, as a poison or pathogen, or of ionizing radiation that will kill 50 percent of the organisms subjected to it in a specified time period. Symbol: LD 5 0.
- menthol cigarettes — cigarettes that are flavoured with menthol
- metamorphic facies — Geology. a group of metamorphic rock units characterized by particular mineralogic associations.
- methylprednisolone — A synthetic glucocorticoid drug, with chemical formula C22H30O5.
- methyltestosterone — a synthetic androgenic steroid drug, C 2 0 H 3 0 O 2 , used for its anabolic properties in males in the treatment of hypogonadism and other androgen-deficiency disease states, and in females in the treatment of breast cancer.
- meurthe-et-moselle — a department in NE France. 2038 sq. mi. (5280 sq. km). Capital: Nancy.
- microsloth windows — (abuse, operating system) /mi:'kroh-sloth" win"dohz/ (Or "Windoze", /win'dohz/) A derogatory term for Microsoft Windows which is so limited by bug-for-bug compatibility with mess-dos that it is agonisingly slow on anything less than a fast 486. Also called just "Windoze", with the implication that you can fall asleep waiting for it to do anything; the latter term is extremely common on Usenet. Compare X, sun-stools.
- microsoft exchange — (messaging) Microsoft's messaging and enterprise collaboration server. Exchange's primary role is as an electronic mail message store but it can also store calendars, task lists, contact details, and other data.
- minister of health — a person appointed to head the government department of health
- moccasin telegraph — the transmission of rumour or secret information; the grapevine
- monophosphorylated — (biochemistry) phosphorylated with a single unit of phosphoric acid.
- moog (synthesizer) — an early musical synthesizer
- moscow art theater — a Russian theatrical company founded in 1898 principally by Konstantin Stanislavski and famous for its naturalistic acting.
- mount saint helens — a city in Merseyside, in NW England, near Liverpool.
- move the goalposts — to change the aims of an activity to ensure the desired results
- multiple ownership — ownership by several people or organizations
- muscular dystrophy — a hereditary disease characterized by gradual wasting of the muscles with replacement by scar tissue and fat, sometimes also affecting the heart.
- neo-pythagoreanism — a philosophical system, established in Alexandria and Rome in the second century b.c., consisting mainly of revived Pythagorean doctrines with elements of Platonism and Stoicism.
- nightmare scenario — If you describe a situation or event as a nightmare scenario, you mean that it is the worst possible thing that could happen.
- nike of samothrace — a Greek marble statue (c200 b.c.) of Nike found at Samothrace and now in the Louvre, Paris.
- northern cameroons — German Kamerun. a region in W Africa: a German protectorate 1884–1919; divided in 1919 into British and French mandates.
- oil of catechumens — holy oil used in baptism, the ordination of a cleric, the coronation of a sovereign, or in the consecration of a church.
- old man of the sea — (in The Arabian Nights' Entertainments) an old man who clung to the shoulders of Sindbad the Sailor for many days and nights.
- outer automorphism — an automorphism that is not an inner automorphism.
- ovariohysterectomy — Surgical removal of the ovaries and uterus.
- pathname separator — (file system) The character used to separate elements of a path or pathname. Under Unix and POSIX.1 compliant systems the pathname separator is the (forward) slash, in MS-DOS backslash serves the same purpose. For obvious reasons the no directory or file name can contain this character.
- phantasmagorically — having a fantastic or deceptive appearance, as something in a dream or created by the imagination.
- photochemical smog — air pollution containing ozone and other reactive chemical compounds formed by the action of sunlight on nitrogen oxides and hydrocarbons, especially those in automobile exhaust.
- photodecomposition — the breaking down of molecules by radiant energy.
- photoisomerization — isomerization induced by light.
- photomorphogenesis — plant development that is controlled by light.
- pigmy hippopotamus — a related but smaller animal, Choeropsis liberiensis
- policeman's helmet — a Himalayan balsaminaceous plant, Impatiens glandulifera, with large purplish-pink flowers, introduced into Britain
- potassium chlorate — a white or colorless, crystalline, water-soluble, poisonous solid, KClO 3 , used chiefly as an oxidizing agent in the manufacture of explosives, fireworks, matches, bleaches, and disinfectants.
- potassium chloride — a white or colorless, crystalline, water-soluble solid, KCl, used chiefly in the manufacture of fertilizers and mineral water, and as a source of other potassium compounds.
- potassium sulphate — a soluble substance usually obtained as colourless crystals of the decahydrate: used in making glass and as a fertilizer. Formula: K2SO4
- processionary moth — a moth of the family Thaumetopoeidae, esp the oak processionary moth (Thaumetopoea processionea), the larvae of which leave the communal shelter nightly for food in a V-shaped procession
- prometheus unbound — a drama in verse (1820) by Shelley.
- provision merchant — a person or company in the business of retailing food and other provisions
- psychogalvanometer — a type of galvanometer for detecting and measuring psychogalvanic currents.
- put the mockers on — stop, thwart
- pygmy hippopotamus — a small hippopotamus, Choeropsis liberiensis, of forests and swamps in western Africa.
- school of motoring — a centre where people pay for lessons to learn to drive
- segmental phonemes — phonemes consisting of sound segments; hence, the vowel, consonant, and semivowel sounds of a language
- september holidays — a period of time in September when people do not have to go to school, college or work
- shipping documents — documents relating to the sending of a shipment of goods, for example containing details of contents, weight, value etc.
- shoot from the hip — the act of shooting with a bow, firearm, etc.
- shotgun microphone — a directional microphone with a narrow-angle range of sensitivity.
- sixth-form college — (in England and Wales) a college offering A-level and other courses to pupils over sixteen from local schools, esp from those that do not have sixth forms
- sling psychrometer — a psychrometer so designed that the wet-bulb thermometer can be ventilated, to expedite evaporation, by whirling in the air.