18-letter words containing r, h, d
- kirkcudbrightshire — a historic county in SW Scotland.
- kitchen-sink drama — a type of drama of the 1950s depicting the sordid aspects of domestic reality
- knight of the road — a tramp
- laugh like a drain — to laugh loudly and coarsely
- lay at the door of — to blame (a person) for
- lincoln's birthday — February 12, a legal holiday in some states of the U.S., in honor of the birth of Abraham Lincoln.
- lipopolysaccharide — any of a class of polysaccharides to which lipids are attached.
- 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.
- long hundredweight — a hundredweight of 112 pounds (50.8 kg), the usual hundredweight in Great Britain, but now rare in the U.S.
- long-horned beetle — any of numerous, often brightly colored beetles of the family Cerambycidae, usually with long antennae, the larva of which bores into the wood of living or decaying trees.
- lord chief justice — the presiding judge of Britain's High Court of Justice, the superior court of record for both criminal and civil cases.
- loschmidt's number — the number of molecules in one cubic centimeter of an ideal gas at standard temperature and pressure, equal to 2.687 × 10 19.
- lyophilized powder — Lyophilized powder is a freeze-dried powder.
- manhattan district — (during World War II) the code name for a unit of US army engineers established in 1942 to construct secret sites for the development of the atomic bomb
- materials handling — the loading, unloading, and movement of goods, as within a factory or warehouse, especially by the aid of mechanical devices.
- mechanical drawing — drawing, as of machinery, done with the aid of rulers, scales, compasses, etc.
- mercurous chloride — calomel.
- methylated spirits — ethyl alcohol denatured with methyl alcohol for the purpose of preventing its use as an alcoholic beverage.
- methylene chloride — a colorless, volatile liquid, CH 2 Cl 2 , used chiefly as a solvent, as a refrigerant, and as a local anesthetic in dentistry.
- methylprednisolone — A synthetic glucocorticoid drug, with chemical formula C22H30O5.
- 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.
- middle high german — the High German language of the period 1100–1500. Abbreviation: MHG.
- middle-of-the-road — favoring, following, or characterized by an intermediate position between two extremes, especially in politics; moderate.
- middleburg heights — a town in N Ohio.
- 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
- movers and shakers — a person or thing that moves.
- mucopolysaccharide — (formerly) glycosaminoglycan.
- muscular dystrophy — a hereditary disease characterized by gradual wasting of the muscles with replacement by scar tissue and fat, sometimes also affecting the heart.
- natural childbirth — childbirth involving little or no use of drugs or anesthesia and usually involving a program in which the mother is psychologically and physically prepared for the birth process.
- 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.
- netherlands guiana — a former name of Suriname.
- neuropsychodynamic — Of or pertaining to neuropsychodynamics.
- 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.
- norwegian elkhound — one of a breed of dogs having a short, compact body, short, pointed ears, and a thick, gray coat, raised originally in Norway for hunting elk and other game.
- not breathe a word — to take air, oxygen, etc., into the lungs and expel it; inhale and exhale; respire.
- oak-leaf hydrangea — a shrub, Hydrangea quercifolia, of the southeastern U.S., having lobed leaves and pyramidal clusters of white flowers.
- 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.
- old curiosity shop — a novel (1840–41) by Dickens.
- 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
- orthophthalic acid — Chemistry. any of three isomeric acids having the formula C 8 H 6 O 4 , especially the ortho isomer (orthophthalic acid) a colorless, crystalline, slightly water-soluble solid used chiefly in the manufacture of dyes, medicine, and perfume.
- orthotungstic acid — an oxyacid acid of tungsten. Formula: H2WO4
- 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.