18-letter words containing d, o, t, h, e, r
- 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).
- monophosphorylated — (biochemistry) phosphorylated with a single unit of phosphoric acid.
- monte carlo method — a technique for numerically approximating the solution of a mathematical problem by studying the distribution of some random variable, often generated by a computer.
- morphine addiction — the fact or condition of being addicted to morphine
- neighborhood watch — a neighborhood surveillance program or group in which residents keep watch over one another's houses, patrol the streets, etc., in an attempt to prevent crime.
- north bedfordshire — a city in Bedfordshire, in central England.
- northeast corridor — the long, narrow strip of land between Boston, New York City, and Washington, D.C., containing many adjacent urban areas.
- not breathe a word — to take air, oxygen, etc., into the lungs and expel it; inhale and exhale; respire.
- officer of the day — an officer who has charge of the guard and prisoners on an assigned day at a military installation. Abbreviation: OD, O.D., O.O.D.
- on the credit side — You say on the credit side in order to introduce one or more good things about a situation or person, usually when you have already mentioned the bad things about them.
- on the danger list — critically ill in hospital
- on the ragged edge — precariously close to loss of self-control, mental stability, etc.
- one's heart bleeds — used to express sympathetic grief, but often used ironically
- orthopedic surgery — corrective operation on bones or joints
- over and done with — If you say that something is over and done with, you mean that it is completely finished and you do not have to think about it any more.
- overhead projector — over one's head; aloft; up in the air or sky, especially near the zenith: There was a cloud overhead.
- paint the town red — a substance composed of solid coloring matter suspended in a liquid medium and applied as a protective or decorative coating to various surfaces, or to canvas or other materials in producing a work of art.
- pass the hat round — to collect money, as for a cause
- peter and the wolf — a composition by Sergei Prokofiev written in 1936. It is a children's story with both music and text, spoken by a narrator accompanied by the orchestra
- phosphatidylserine — any of a class of phospholipids occurring in biological membranes and fats
- planned parenthood — an organization that gives out information on the planning of the number and spacing of the births of one's children, as through the use of birth-control measures
- positively charged — having a positive charge
- 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.
- prepare the ground — make conditions ready
- prometheus unbound — a drama in verse (1820) by Shelley.
- pseudo-anarchistic — a person who advocates or believes in anarchy or anarchism.
- put heads together — the upper part of the body in humans, joined to the trunk by the neck, containing the brain, eyes, ears, nose, and mouth.
- random walk theory — the theory that the future movement of share prices does not reflect past movements and therefore will not follow a discernible pattern
- residential school — (in Canada) a boarding school maintained by the Canadian government for Indian and Inuit children from sparsely populated settlements
- return to the fold — come back home
- rhode island white — one of a dual-purpose American breed of chickens having white feathers and a rose comb.
- rooted to the spot — If you are rooted to the spot, you are unable to move because you are very frightened or shocked.
- rub shoulders with — to mix with socially or associate with
- runge-kutta method — a numerical method, involving successive approximations, used to solve differential equations.
- saint john's bread — carob (def 2).
- scottish deerhound — one of a Scottish breed of large, tall hunting dogs having a medium-length, wiry, gray or reddish-fawn coat, originally developed for hunting and bringing down deer, and known as the royal dog of Scotland.
- scratch one's head — If you say that someone is scratching their head, you mean that they are thinking hard and trying to solve a problem or puzzle.
- search-and-destroy — designed to find and destroy by bombing etc
- september holidays — a period of time in September when people do not have to go to school, college or work
- sheltered workshop — a place of employment for persons with disabilities where their rights are protected and their needs are met.
- shift one's ground — to change one's argument or defense
- short-tailed shrew — a grayish-black shrew, Blarina brevicauda, common in eastern North America, that has a tail less than half the length of the body.
- shorthand notebook — a notebook used by a shorthand writer
- sindbad the sailor — (in The Arabian Nights' Entertainments), a wealthy citizen of Baghdad who relates the adventures of his seven wonderful voyages.
- sonic depth finder — a sonar instrument that uses echolocation to measure depths under water.
- sound and the fury — a novel (1929) by William Faulkner.
- sound spectrograph — an electronic device for recording a sound spectogram.
- southern rhodesian — a former name (until 1964) of Zimbabwe (def 1).
- sow dragon's teeth — to take some action that is intended to prevent strife or trouble but that actually brings it about
- spotted flycatcher — a European woodland songbird, Muscicapa striata, with a greyish-brown streaked plumage: family Muscicapidae (Old World flycatchers)