18-letter words containing a, d, s, u, m
- a month of sundays — a long unspecified period
- absolute magnitude — the apparent magnitude a given star would have if it were situated at a distance of 10 parsecs (32.6 light years) from the earth
- acoustic impedance — the total reaction of a medium to the transmission of sound through it, expressed as the ratio of sound pressure to particle velocity at a given point in the medium.
- adenocarcinomatous — Of or pertaining to adenocarcinomas.
- all meals included — All meals included is used to indicate that a price, especially the price of a hotel stay or vacation, includes the cost of meals in the hotel.
- almoner's cupboard — a cupboard with pierced doors, formerly used as a storage place for food.
- aminosuccinic acid — aspartic acid.
- arrest of judgment — a stay of proceedings after a verdict, on the grounds of error or possible error
- autoimmune disease — a disease resulting from a disordered immune reaction in which antibodies are produced against one's own tissues, as systemic lupus erythematosus or rheumatoid arthritis.
- ballistic pendulum — a device consisting of a large mass hung from a horizontal bar by two rods, used to measure the velocity of an object, as a bullet, by retaining the object upon impact, its velocity being a function of the displacement of the mass.
- bomb disposal unit — a unit of the police or armed services specializing in bomb disposal
- bounty-fed farmers — farmers who benefit from subsidies
- building materials — materials such as bricks, cement, timber, etc
- centum call second — (unit) (CCS) A unit used (in North America) to quantify the total traffic running in a network. 1 CCS is 100 call-seconds. That means 1 CCS could be 2 calls of 50 seconds duration or 20 calls of 5 seconds duration.
- chambered nautilus — nautilus (def 1).
- circular dichroism — selective absorption of one of the two possible circular polarizations of light.
- common-law husband — a man considered to be a woman's husband after the couple have cohabited for several years
- considered harmful — (programming, humour) A type of phrase based on the title of Edsger W. Dijkstra's famous note in the March 1968 Communications of the ACM, "Goto Statement Considered Harmful", which fired the first salvo in the structured programming wars. Amusingly, the ACM considered the resulting acrimony sufficiently harmful that it will (by policy) no longer print articles taking so assertive a position against a coding practice. In the ensuing decades, a large number of both serious papers and parodies bore titles of the form "X considered Y". The structured-programming wars eventually blew over with the realisation that both sides were wrong, but use of such titles has remained as a persistent minor in-joke.
- costume department — the department in a theatre or television company that is responsible for actors' costumes
- customs and excise — Customs and Excise is a British government department which is responsible for collecting taxes on imported and exported goods. Compare Customs Service.
- delmarva peninsula — a peninsula of the northeast US, between Chesapeake Bay and the Atlantic
- desiderius erasmus — Desiderius [des-i-deer-ee-uh s] /ˌdɛs ɪˈdɪər i əs/ (Show IPA), 1466?–1536, Dutch humanist, scholar, theologian, and writer.
- destruct mechanism — a mechanism that causes the destruction of a rocket or missile when activated
- dia de los muertos — Day of the Dead.
- diaminofluorescein — (organic compound) A fluorescein into which two amino groups have been substituted.
- diatomaceous earth — an unconsolidated form of diatomite
- dicalcium silicate — a component of cement, 2CaO⋅SiO 2 , also used to neutralize acid soils.
- dietary supplement — a substance taken in addition to what you eat in order to promote health
- digital humanities — (used with a singular verb) the study of literature, philosophy, etc., as facilitated by computer technology or digital media: Digital humanities uses data analysis to find patterns in large bodies of text. the set of methodologies used in such scholarship.
- diplomatic shuttle — a series of diplomatic visits to other states made by an official, such as an ambassador or envoy
- disodium phosphate — sodium phosphate (def 2).
- dispatch documents — documents sent with a parcel, etc, detailing information such as contents, delivery address, etc
- elementary student — primary school pupil
- euclid's algorithm — (algorithm) (Or "Euclidean Algorithm") An algorithm for finding the greatest common divisor (GCD) of two numbers. It relies on the identity gcd(a, b) = gcd(a-b, b) To find the GCD of two numbers by this algorithm, repeatedly replace the larger by subtracting the smaller from it until the two numbers are equal. E.g. 132, 168 -> 132, 36 -> 96, 36 -> 60, 36 -> 24, 36 -> 24, 12 -> 12, 12 so the GCD of 132 and 168 is 12. This algorithm requires only subtraction and comparison operations but can take a number of steps proportional to the difference between the initial numbers (e.g. gcd(1, 1001) will take 1000 steps).
- first class module — (programming) A module that is a first class data object of the programming language, e.g. a record containing functions. In a functional language, it is standard to have first class programs, so program building blocks can have the same status.
- fixed-focus camera — a camera with an unadjustable focal length and with a relatively large depth of field.
- gamma distribution — a continuous two-parameter distribution from which the chi-square and exponential distributions are derived, written Gamma (α. β), where α and β are greater than zero, and defined in terms of the gamma function
- gastroduodenostomy — See under gastroenterostomy.
- gum digger's spear — a long steel probe used by gum diggers digging for kauri gum
- handlebar mustache — A handlebar mustache is a long thick mustache with curled ends.
- hemidemisemiquaver — a sixty-fourth note.
- honour moderations — (at Oxford University) the first public examination, in which candidates are placed into one of three classes of honours
- industrial diamond — a small often synthetic diamond, valueless as a gemstone, used in cutting tools, abrasives, etc
- instrument landing — an aircraft landing accomplished by use of gauges on the instrument panel and ground-based radio equipment, with limited reference to outside visual signals.
- jerusalem syndrome — a delusive condition affecting some visitors to Jerusalem in which the sufferer identifies with a major figure from his or her religious background
- jimenez de quesada — Gonzalo [gawn-thah-law,, -sah-] /gɔnˈθɑ lɔ,, -ˈsɑ-/ (Show IPA), 1497?–1579, Spanish explorer and conqueror in South America.
- justice department — the United States federal department for enforcing federal laws
- lay down your arms — If soldiers lay down their arms, they stop fighting and give up their weapons.
- logarithmus dualis — (mathematics) (ld) Latin for logarithm base two. More commonly written as "log" with a subscript "2". Roughly the number of bits required to represent an integer.
- magnesium peroxide — a white, tasteless, water-insoluble powder, MgO 2 , used as an antiseptic and as an oxidizing and bleaching agent.
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