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18-letter words containing d, o, r, a

  • mineralocorticoids — Plural form of mineralocorticoid.
  • misplaced modifier — Grammar. a word, phrase, or clause that seems to refer to or modify an unintended word because of its placement in a sentence, as when young in When young, circuses appeal to all of us.
  • misunderestimation — (nonstandard) An inaccurate underestimation, or an act of misunderestimating.
  • 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).
  • molecular medicine — the study of disease or injury at the molecular or cellular level.
  • 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.
  • 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)
  • morphine addiction — the fact or condition of being addicted to morphine
  • motor torpedo boat — PT boat.
  • movers and shakers — a person or thing that moves.
  • moving bed reactor — A moving bed reactor is a reactor in which a layer of catalyst in the form of granules is moved between a reaction area and a regeneration area.
  • 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.
  • national guardsman — guardsman (def 2).
  • 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.
  • neurodevelopmental — Of or pertaining to the development of neurological pathways in the brain.
  • neuropsychodynamic — Of or pertaining to neuropsychodynamics.
  • new forest disease — an infectious eye disease causing acute eye pain in cattle
  • new zealand on air — the operational name for the New Zealand Broadcasting Commission
  • nominative-address — a noun naming the person to whom one is speaking.
  • non-discriminative — constituting a particular quality, trait, or difference; characteristic; notable.
  • non-understandable — capable of being understood; comprehensible.
  • nonstriated muscle — smooth muscle
  • nord-pas-de-calais — a region of N France, on the Straits of Dover (the Pas de Calais): coal-mining, textile, and metallurgical industries
  • normally aspirated — A normally aspirated or naturally aspirated engine breathes air at atmospheric pressure.
  • 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.
  • nueva san salvador — Santa Tecla.
  • oak-leaf hydrangea — a shrub, Hydrangea quercifolia, of the southeastern U.S., having lobed leaves and pyramidal clusters of white flowers.
  • obedience training — the training of an animal, especially a dog, to obey certain commands.
  • office of readings — the first of the canonical hours; matins
  • 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 low franconian — a Low German dialect of the Franks of the lower Rhine valley before c1100.
  • on delicate ground — in a situation requiring tact
  • 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
  • open pandora's box — If someone or something opens Pandora's box or opens a Pandora's box, they do something that causes a lot of problems to appear that did not exist or were not known about before.
  • operation overlord — the codename for the Allied invasion (June 1944) of northern France
  • optical disc drive — optical disk drive
  • optical disk drive — (hardware)   (Or "optical disc drive", "optical storage") A generic term for any device that reads and/or writes optical media, i.e. compact discs, DVDs and/or Blu-ray discs or future media that uses light (from a small laser) to read data off a removable, rotating disk. At least one such drive is commonly installed in most personal computers to allow them to play and/or record audio and video media and load and store data such as program installers. The floppy disk has been replaced by optical media due to its vastly greater capacity, e.g. 50,000 megabytes for a dual-layer blu-ray disc compared with 1.5 megabytes for a floppy (over 30,000 times as much).
  • 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.
  • organic solidarity — social cohesiveness that is based on division of labor and interdependence and is characteristic of complex, industrial societies.
  • organized religion — institutionalized religion, usually with a hierarchical clergy and rules to govern the means by which adherents participate
  • oriental almandine — a variety of corundum resembling almandine in colour and used as a gemstone
  • 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.
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