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15-letter words containing d, a, n, o

  • rack-and-pinion — of or relating to a mechanism in which a rack engages a pinion: rack-and-pinion steering.
  • radar astronomy — the branch of astronomy that uses radar to map the surfaces of planetary bodies, as the moon and Venus, and to determine periods of rotation.
  • radio announcer — someone who broadcasts or presents radio programmes
  • radio astronomy — the branch of astronomy that utilizes extraterrestrial radiation in radio wavelengths rather than visible light for the study of the universe.
  • radio frequency — the frequency of the transmitting waves of a given radio message or broadcast.
  • radio sono-buoy — a buoy equipped to detect underwater noises and transmit them by radio
  • radio telephone — A radio telephone is a telephone which carries sound by sending radio signals rather than by using wires. Radio telephones are often used in cars.
  • radio-telephone — a telephone in which sound or speech is transmitted by means of radio waves instead of through wires or cables.
  • radiogoniometer — a device used to detect the direction of radio waves, consisting of a coil that is free to rotate within two fixed coils at right angles to each other
  • radiogoniometry — the science of detecting the direction of radio waves
  • radioimmunology — the study of biological substances or processes with the aid of antigens or antibodies labeled with a radioactive isotope.
  • radioprotection — protection against radiation
  • radiosensitizer — a substance, as a drug, that enhances the sensitivity of tissues or cells to radiation therapy.
  • radiotechnology — the technical application of any form of radiation to industry.
  • random sampling — a method of selecting a sample (random sample) from a statistical population in such a way that every possible sample that could be selected has a predetermined probability of being selected.
  • random variable — a quantity that takes any of a set of values with specified probabilities.
  • re-adjudication — an act of adjudicating.
  • re-demonstrated — to make evident or establish by arguments or reasoning; prove: to demonstrate a philosophical principle.
  • reaccreditation — the act or process of reaccrediting something or someone
  • read oneself in — to assume possession of a benefice by publicly reading the Thirty-nine Articles
  • recombinant dna — DNA in which one or more segments or genes have been inserted, either naturally or by laboratory manipulation, from a different molecule or from another part of the same molecule, resulting in a new genetic combination.
  • reconsideration — to consider again, especially with a view to change of decision or action: to reconsider a refusal.
  • reconsolidation — an act or instance of consolidating; the state of being consolidated; unification: consolidation of companies.
  • record-breaking — top, most successful
  • recording angel — an angel who supposedly keeps a record of every person's good and bad acts
  • red sandal wood — the fragrant heartwood of any of certain Asian trees of the genus Santalum, used for ornamental carving and burned as incense.
  • redemonstration — the act or circumstance of proving or being proved conclusively, as by reasoning or a show of evidence: a belief incapable of demonstration.
  • redetermination — the act of coming to a decision or of fixing or settling a purpose.
  • rediscount rate — the rate charged by the Federal Reserve Bank to member banks for rediscounting commercial paper.
  • redocumentation — The creation or revision of a semantically equivalent representation within the same relative abstraction level. The resulting forms of representation are usually considered alternate views intended for a human audience.
  • reduction ratio — an expression of the number of times by which an original document has been reduced in a microcopy.
  • refined fortran — (RF) Similar to Refined C. Research implementations only. "Refined Fortran: Another Sequential Language for Parallel Programming," H.G. Dietz et al, Proc 1986 Intl Conf Parallel Proc, pp.184-191.
  • relational dbms — relational database
  • remand prisoner — a prisoner who is sent back into custody (or sometimes admitted to bail) to await trial or continuation of their trial
  • repeat offender — A repeat offender is someone who commits the same sort of crime more than once.
  • residual income — the remaining income (of a business or person) after necessary debts, expenses, etc, have been paid
  • retained income — retained earnings.
  • retained object — an object in a passive construction identical with the direct or indirect object in the active construction from which it is derived, as the picture in I was shown the picture, which is also the direct object in the active construction (They) showed me the picture.
  • rhodesian front — the governing party in Zimbabwe (then called Rhodesia) 1962–78
  • ricinoleic acid — a colorless to yellow, viscous, liquid, water-insoluble, unsaturated hydroxyl acid, C 1 8 H 3 4 O 3 , occurring in castor oil in the form of the glyceride: used chiefly in soaps and textile finishing.
  • right-hand buoy — a distinctive buoy marking the side of a channel regarded as the right, or starboard, side.
  • robin redbreast — robin (defs 1, 2).
  • rogation sunday — the fifth Sunday after Easter; it sees the start of the supplications that are continued during the following Monday, Tuesday and Wednesday
  • rolling meadows — a city in NE Illinois, near Chicago.
  • romantic comedy — a light and humorous movie, play, etc., whose central plot is a happy love story.
  • romblon islands — a group of islands of the Philippines in the Sibuyan Sea and Tablas Strait, part of the Visayan Islands.
  • room-and-pillar — noting a means of extracting coal or other minerals from underground deposits by first cutting out rooms, then robbing the pillars between them; pillar-and-breast.
  • root and branch — a part of the body of a plant that develops, typically, from the radicle and grows downward into the soil, anchoring the plant and absorbing nutriment and moisture.
  • root-and-branch — a part of the body of a plant that develops, typically, from the radicle and grows downward into the soil, anchoring the plant and absorbing nutriment and moisture.
  • rotary drilling — Rotary drilling is the use of a continuous circular motion of the drill bit to make a hole.
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