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

  • midstream operator — A midstream operator is a company that gathers, transports, and processes natural gas or oil.
  • mineralocorticoids — Plural form of mineralocorticoid.
  • 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).
  • 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
  • motor torpedo boat — PT boat.
  • 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.
  • 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.
  • new forest disease — an infectious eye disease causing acute eye pain in cattle
  • 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
  • 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.
  • not breathe a word — to take air, oxygen, etc., into the lungs and expel it; inhale and exhale; respire.
  • obedience training — the training of an animal, especially a dog, to obey certain commands.
  • 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 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
  • 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).
  • 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.
  • oriental almandine — a variety of corundum resembling almandine in colour and used as a gemstone
  • osteitis deformans — Paget's disease.
  • osteoradionecrosis — bone tissue death induced by radiation.
  • 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.
  • overdraft facility — a facility (of a bank or building-society cheque account) that allows a withdrawal of money in excess of the account's credit balance
  • overdraft interest — interest charged on money withdrawn in excess of the credit balance of a bank or building society account
  • overhead projector — over one's head; aloft; up in the air or sky, especially near the zenith: There was a cloud overhead.
  • overidentification — an act or instance of identifying; the state of being identified.
  • 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.
  • 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.
  • pass the hat round — to collect money, as for a cause
  • passing-out parade — a ceremonial parade of cadets who have completed their training
  • pectoral sandpiper — an American sandpiper, Calidris melanotos, the male of which, when courting, inflates its chest conspicuously.
  • perforated tracery — tracery, as in early Gothic architecture, formed of cut or pierced slabs of stone set on edge with the flat side outward.
  • 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
  • pileolated warbler — either of two western subspecies of Wilson's warbler.
  • 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
  • point d'angleterre — a bobbin lace in which the design is worked out with either a needle or bobbin.
  • point of departure — Nautical. the precise location of a vessel, established in order to set a course, especially in beginning a voyage in open water.
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