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16-letter words containing r, a, d, i, o, h

  • hydroformylation — the addition of a hydrogen atom and the formyl group to a double bond of a hydrocarbon by reaction with a mixture of carbon monoxide and hydrogen in the presence of a catalyst.
  • hydrogen cyanide — a colorless poisonous gas, HCN, having a bitter almondlike odor: in aqueous solution it forms hydrocyanic acid.
  • hydrostatic head — The hydrostatic head is the vertical height of a column of fluid.
  • hydroxylammonium — (inorganic compound) The univalent NH3OH+ cation, derived from hydroxylamine.
  • hyperandrogenism — (medicine) An abnormally high production of androgens.
  • hyperchlorhydria — excessive secretion of hydrochloric acid in the stomach.
  • hyperlipoidaemia — Alt form hyperlipoidemia.
  • hyponitrous acid — an unstable, crystalline acid, H 2 N 2 O 2 .
  • icositetrahedron — a solid figure having 24 faces.
  • irrigation ditch — trench supplying land with water
  • judaeo-christian — of or relating to the religious writings, beliefs, values, or traditions held in common by Judaism and Christianity.
  • kurdaitcha shoes — (in certain Central Australian Aboriginal tribes) the emu-feather shoes worn by the kurdaitcha on his mission so that his footsteps may not be traced
  • limited monarchy — a monarchy that is limited by laws and a constitution.
  • limited-monarchy — a limited train, bus, etc.
  • lord chamberlain — (in Britain) the chief official of the royal household
  • lord howe island — an island in the S Pacific, E of Australia: a dependency of New South Wales. 5 sq. mi. (13 sq. km).
  • mail-order house — a retail firm that conducts its business by receiving orders and shipping its merchandise through the mail and that supplies its customers with catalogs, circulars, etc.
  • medieval cornish — the Cornish language of the Middle Ages, usually dated from the 14th century to 1600.
  • medieval history — the branch of history dealing with the Middle Ages
  • mothering sunday — Laetare Sunday.
  • no hard feelings — If you say ' no hard feelings', you are making an agreement with someone not to be angry or bitter about something.
  • norodom sihanouk — Prince Norodom [nawr-uh-dom,, -duh m] /ˈnɔr əˌdɒm,, -dəm/ (Show IPA), 1922–2004, Cambodian statesman: premier 1952–60; chief of state 1960–70 and 1975–76.
  • north plainfield — a city in NE New Jersey.
  • northern ireland — a political division of the United Kingdom, in the NE part of the island of Ireland. 5238 sq. mi. (13,565 sq. km). Capital: Belfast.
  • norwegian buhund — a slightly-built medium-sized dog of a breed with erect pointed ears and a short thick tail carried curled over its back
  • nusslein-volhard — Christiane [kris-tee-ah-nuh,, kris-tyah-] /ˌkrɪs tiˈɑ nə,, krɪsˈtyɑ-/ (Show IPA), born 1942, German biologist: Nobel prize 1995.
  • off-road vehicle — An off-road vehicle is a vehicle that is designed to travel over rough ground.
  • oligosaccharides — Plural form of oligosaccharide.
  • on the breadline — impoverished; living at subsistence level
  • orographic cloud — any cloud whose existence and form are largely controlled by the disturbed flow of air over and around mountains, as the banner cloud and crest cloud.
  • orthodox judaism — Judaism as observed by Orthodox Jews.
  • orthoformic acid — a hypothetical acid, HC(OH) 3 , known only in the form of its esters.
  • overhead railway — elevated railroad.
  • pharmacodynamics — the branch of pharmacology dealing with the course of action, effect, and breakdown of drugs within the body.
  • phonocardiograph — an instrument for graphically recording the sound of the heartbeat.
  • phosphorous acid — a colorless, crystalline, water-soluble acid of phosphorus, H 3 PO 3 , from which phosphites are derived.
  • phytoremediation — a process of decontaminating soil or water by using plants and trees to absorb or break down pollutants.
  • pinot chardonnay — Chardonnay.
  • pithecanthropoid — of, relating to, or resembling the former genus Pithecanthropus or one of its members.
  • pseudohistorical — of, pertaining to, treating, or characteristic of history or past events: historical records; historical research.
  • pyramidal orchid — a chalk-loving orchid, Anacamptis pyramidalis, bearing a dense cone-shaped spike of purplish-pink flowers with a long curved spur
  • radio microphone — a microphone incorporating a radio transmitter so that the user can move around freely
  • radio-phonograph — a radio and phonograph combined in one unit and sharing some components, as the amplifier and speaker(s)
  • radiographically — the production of radiographs.
  • redbank whiteoak — a city in S Tennessee.
  • residential home — a home with social-work supervision for people who need more than just housing accommodation, such as esp the elderly, and also children in care or mentally handicapped adults
  • rhode island red — one of an American breed of chickens having dark reddish-brown feathers and producing brown eggs.
  • roundabout chair — corner chair.
  • russian orthodox — of or relating to the Russian Orthodox Church
  • shakedown cruise — extortion, as by blackmail or threats of violence.
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