18-letter words containing d, i, u, r
- industrial hygiene — the science that assesses, controls, and prevents occupational factors or sources of stress in the workplace that may significantly affect the health and well-being of employees or of the community in general
- industrial vehicle — a vehicle designed for use in industry
- informatory double — a double intended to inform one's partner that one has a strong hand and to urge a bid regardless of the strength of his or her hand.
- 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.
- insurance adjuster — An insurance adjuster is the same as a claims adjuster.
- integrated circuit — a circuit of transistors, resistors, and capacitors constructed on a single semiconductor wafer or chip, in which the components are interconnected to perform a given function. Abbreviation: IC.
- integrated studies — a course that includes a number of subjects and is organized by theme
- justice department — the United States federal department for enforcing federal laws
- kirkcudbrightshire — a historic county in SW Scotland.
- laugh like a drain — to laugh loudly and coarsely
- liquid distributor — A liquid distributor is a device which is used to spread liquid when it enters a packed column (= a tall vessel with packing, used for separating substances).
- 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.
- 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.
- lunitidal interval — the period of time between the moon's transit and the next high lunar tide.
- magnesium peroxide — a white, tasteless, water-insoluble powder, MgO 2 , used as an antiseptic and as an oxidizing and bleaching agent.
- marine underwriter — an underwriter who specializes in marine insurance
- marsilius of padua — c1280–1343? Italian scholar and political theorist.
- mercurous chloride — calomel.
- mercury delay line — (storage, history) An archaic first-in first-out fixed time period data storage device using acoustic transducers to transmit data as waves in a trough or tube of mercury. EDSAC (Cambridge) and UNIVAC I used delay lines.
- middleburg heights — a town in N Ohio.
- milkweed butterfly — monarch butterfly.
- misunderestimation — (nonstandard) An inaccurate underestimation, or an act of misunderestimating.
- mixed-flow turbine — a water turbine in which water flows radially and axially through the rotating vanes
- 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).
- modulus of torsion — a coefficient of elasticity of a substance, expressing the ratio between the force per unit area (shearing stress) that laterally deforms the substance and the shear (shearing strain) that is produced by this force.
- molecular medicine — the study of disease or injury at the molecular or cellular level.
- mordovian republic — a constituent republic of W central Russia, in the middle Volga basin. Capital: Saransk. Pop: 888 700 (2002). Area: 26 200 sq km (10 110 sq miles)
- mucopolysaccharide — (formerly) glycosaminoglycan.
- multi-user dungeon — Multi-User Dimension
- national guardsman — guardsman (def 2).
- 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.
- needlestick injury — an injury that is caused by accidentally pricking the skin with a hypodermic needle
- netherlands guiana — a former name of Suriname.
- neuroendocrinology — the study of the anatomical and physiological interactions between the nervous and endocrine systems.
- neuropsychodynamic — Of or pertaining to neuropsychodynamics.
- nondestructiveness — The quality of not being destructive.
- nonstriated muscle — smooth muscle
- 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.
- numerical identity — the relation that holds between two relata when they are the selfsame entity, that is, when the terms designating them have the same reference
- old curiosity shop — a novel (1840–41) by Dickens.
- on delicate ground — in a situation requiring tact
- optical soundtrack — the final soundtrack on a motion picture, which appears as a band of black and white serrations along a strip of film to the left of the composite print. Light is shined through the serrations and is converted to audible sound.
- order of australia — an order awarded to Australians for outstanding achievement or for service to Australia or to humanity at large; established in 1975
- order of magnitude — You can use order of magnitude when you are giving an approximate idea of the amount or importance of something.
- orthopedic surgery — corrective operation on bones or joints
- orthotungstic acid — an oxyacid acid of tungsten. Formula: H2WO4
- paediatric nursing — the branch of nursing concerned with the care of children
- parallel reduction — A form of applicative order reduction in which all redexes in an expression are reduced simultaneously. Variants include parallel outermost reduction and lenient reduction. See normal order reduction.