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15-letter words containing h, e, d, r, o

  • ornithodelphian — of or relating to mammals of the class Ornithodelphia
  • orphaned i-node — (operating system)   /or'f*nd i:'nohd/ [Unix] 1. A file that retains storage but no longer appears in the directories of a file system.
  • ortho-toluidine — Chemistry. a light-yellow, very slightly water-soluble liquid, C 7 H 9 N, the ortho isomer of toluidine: used in the manufacture of dyes, saccharin, and other organic compounds, and in textile printing processes.
  • orthopaedic bed — a specially firm bed designed to help correct or ameliorate the discomfort of disorders of the spine and joints
  • orthopaedically — in an orthopaedic manner
  • osteochondritis — inflammation of bone and cartilage.
  • osteochondrosis — a disease of bone and cartilage growth centers in children that begins as a necrosis and is followed by regeneration or renewed calcification.
  • over one's head — the upper part of the body in humans, joined to the trunk by the neck, containing the brain, eyes, ears, nose, and mouth.
  • overhead locker — a locker situated above someone's seat for storing luggage, etc
  • oyster toadfish — See under toadfish (def 1).
  • paedophile ring — a group of people who take part in illegal sexual activity involving children
  • passport holder — a person who has a passport
  • perchloric acid — a colorless, syrupy hygroscopic liquid, HClO 4 , an acid of chlorine containing one more oxygen atom than chloric acid: used chiefly as a reagent in analytical chemistry.
  • phenazopyridine — a substance, C 1 1 H 1 2 ClN 5 , used as a lower urinary tract analgesic.
  • photodegradable — (of a substance) capable of being broken down by light.
  • polychlorinated — having multiple chlorine atoms
  • posthole digger — a tool or device for digging a posthole.
  • potash feldspar — any of the feldspar minerals having the composition KAlSi 3 O 8 , as orthoclase.
  • propionaldehyde — a colorless, water-soluble liquid, C 3 H 6 O, having a pungent odor: used chiefly in the manufacture of plastics.
  • propyl aldehyde — a colorless, water-soluble liquid, C 3 H 6 O, having a pungent odor: used chiefly in the manufacture of plastics.
  • propylhexedrine — a colorless, adrenergic, water-soluble liquid, C 1 0 H 2 N, used by inhalation as a nasal decongestant.
  • protonephridium — a tubular, excretory structure in certain invertebrates, as flatworms, rotifers, and some larvae, usually ending internally in flame cells and having an external pore
  • pseudepigraphon — any book of the Pseudepigrapha
  • pseudoarthrosis — a joint formed by fibrous tissue bridging the gap between the two fragments of bone of an old fracture that have not united
  • pseudoephedrine — a dextrorotatory, isomeric compound, C 1 0 H 1 5 NO, used as a nasal decongestant.
  • pseudonephritis — a condition, thought to be benign, in which microscopic amounts of blood and protein are present in the urine, occurring commonly among athletes after strenuous exercise.
  • 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.
  • radiochemically — by radiochemical means or methods; from a radiochemical perspective
  • radiotechnology — the technical application of any form of radiation to industry.
  • radiotelegraphy — the constructing or operating of radiotelegraphs.
  • raw-pack method — cold pack (def 2).
  • red riding hood — fairytale character
  • reported speech — indirect quotation
  • reverend mother — a title of respect or form of address for the Mother Superior of a convent
  • rhodesian front — the governing party in Zimbabwe (then called Rhodesia) 1962–78
  • robe-de-chambre — a dressing gown.
  • rough and ready — rough, rude, or crude, but good enough for the purpose: a rough-and-ready estimate of future expenses.
  • rough-and-ready — rough, rude, or crude, but good enough for the purpose: a rough-and-ready estimate of future expenses.
  • round character — a character in fiction whose personality, background, motives, and other features are fully delineated by the author.
  • round the twist — mad; eccentric
  • round whitefish — a whitefish, Prosopium cylindraceum, found in northern North America and Siberia, having silvery sides and a dark bronze back.
  • round-the-clock — around-the-clock.
  • roundheadedness — the state of having a round head
  • rowland heights — a city in SW California, near Los Angeles.
  • rutherford atom — the atom postulated as analogous to the solar system, with electrons revolving around a small, central, positive nucleus that constitutes practically the entire mass of the atom
  • sacred mushroom — any of various hallucinogenic mushrooms, esp species of Psilocybe and Amanita, that have been eaten in rituals in various parts of the world
  • sandwich course — A sandwich course is an educational course in which you have periods of study between periods of being at work.
  • scared to death — terrified
  • schooner-rigged — rigged as a schooner, especially with gaff sails and staysails only.
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