18-letter words containing m, o, t, h, u
- modular arithmetic — arithmetic in which numbers that are congruent modulo a given number are treated as the same. Compare congruence (def 2), modulo, modulus (def 2b).
- moulding technique — the technique used to shape a material into a frame or mould
- mount saint helens — a city in Merseyside, in NW England, near Liverpool.
- 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.
- neuroophthalmology — the branch of ophthalmology that deals with the optic nerve and other nervous system structures involved in vision.
- no laughing matter — sth serious
- 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.
- outer automorphism — an automorphism that is not an inner automorphism.
- outreach programme — a programme designed to help and encourage disadvantaged members of the community
- phytohemagglutinin — a lectin, obtained from the red kidney bean, that binds to the membranes of T cells and stimulates metabolic activity, cell division, etc.
- pigmy hippopotamus — a related but smaller animal, Choeropsis liberiensis
- 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
- pound the pavement — a paved road, highway, etc.
- prometheus unbound — a drama in verse (1820) by Shelley.
- put the mockers on — stop, thwart
- pygmy hippopotamus — a small hippopotamus, Choeropsis liberiensis, of forests and swamps in western Africa.
- quick off the mark — If you are quick off the mark, you are quick to understand or respond to something. If you are slow off the mark, you are slow to understand or respond to something.
- roman architecture — buildings in style of ancient Rome
- runge-kutta method — a numerical method, involving successive approximations, used to solve differential equations.
- shipping documents — documents relating to the sending of a shipment of goods, for example containing details of contents, weight, value etc.
- shotgun microphone — a directional microphone with a narrow-angle range of sensitivity.
- so much the better — You can say 'so much the better' or 'all the better' to indicate that it is desirable that a particular thing is used, done, or available.
- sodium hyposulfite — sodium thiosulfate.
- sodium thiocyanate — a white powder or colorless, deliquescent crystals, NaSCN, used chiefly in organic synthesis and in medicine in the treatment of hypertension.
- sodium thiosulfate — a white, crystalline, water-soluble powder, Na 2 S 2 O 3 ⋅5H 2 O, used as a bleach and in photography as a fixing agent.
- southampton island — an island in N Canada, in the Northwest Territories at the entrance to Hudson Bay. 19,100 sq. mi. (49,470 sq. km).
- southern cameroons — German Kamerun. a region in W Africa: a German protectorate 1884–1919; divided in 1919 into British and French mandates.
- spur-of-the-moment — occurring or done without advance preparation or deliberation; extemporaneous; unplanned: a spur-of-the-moment decision.
- the black mountain — a mountain range in S Wales, in E Carmarthenshire and W Powys. Highest peak: Carmarthen Van, 802 m (2632 ft)
- the mosque of omar — the mosque in Jerusalem, Israel, built in 691 ad by caliph 'Abd al-Malik: the third most holy place of Islam; stands on the Temple Mount alongside the al-Aqsa mosque
- the mountain state — a nickname referring to West Virginia
- the movie industry — the industry that makes entertainment films or movies
- the uncircumcision — the gentiles
- thermionic current — an electric current produced by the flow of thermions.
- thermoluminescence — phosphorescence produced by the heating of a substance.
- thermonuclear bomb — hydrogen bomb.
- thought experiment — Physics. a demonstration or calculation that is based on the postulates of a theory, as relativity, and that demonstrates or clarifies the consequences of the postulates.
- to come unstitched — to go wrong or awry
- to cut the mustard — If someone does not cut the mustard, their work or their performance is not as good as it should be or as good as it is expected to be.
- to meet your match — If you meet your match, you find that you are competing or fighting against someone who you cannot beat because they are as good as you, or better than you.
- urban homesteading — homesteading (def 2).
- white-footed mouse — any of several North American woodland mice of the genus Peromyscus, especially P. leucopus, having white feet and undersides.
- widemouth blindcat — any of several catfishes, as Satan eurystomus (widemouth blindcat) of Texas, that inhabit underground streams and have undeveloped eyes and unpigmented skin.
- woman of the house — lady of the house.