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

  • 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.
  • orthoformic acid — a hypothetical acid, HC(OH) 3 , known only in the form of its esters.
  • overdramatically — In an overdramatic manner.
  • periodic decimal — repeating decimal.
  • periodic tenancy — the letting of a dwelling for a repeated short term, as by the week, month, or quarter, with no end date
  • 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.
  • picture postcard — postcard (def 1).
  • pinot chardonnay — Chardonnay.
  • pithecanthropoid — of, relating to, or resembling the former genus Pithecanthropus or one of its members.
  • pocket billiards — pool2 (def 1).
  • polar coordinate — Usually, polar coordinates. one of two coordinates used to locate a point in a plane by the length of its radius vector and the angle this vector makes with the polar axis (polar angle)
  • polyacrylic acid — a polymer of acrylic acid used as a sizing agent in the manufacture of nylon and other synthetic textiles.
  • posigrade rocket — an auxiliary rocket used to separate the sections of a multistage rocket, fired in the direction of flight.
  • prescription pad — a pad of prescriptions used by doctors, etc
  • primary producer — any green plant or any of various microorganisms that can convert light energy or chemical energy into organic matter.
  • program director — a chief executive responsible for selecting and scheduling programs.
  • project guardian — (project, security)   A project which grew out of the ARPA support for Multics and the sale of Multics systems to the US Air Force. The USAF wanted a system that could be used to handle more than one security classification of data at a time. They contracted with Honeywell and MITRE Corporation to figure out how to do this. Project Guardian led to the creation of the Access Isolation Mechanism, the forerunner of the B2 labeling and star property support in Multics. The DoD Orange Book was influenced by the experience in building secure systems gained in Project Guardian.
  • prolonged-action — sustained-release.
  • promotional code — A promotional code is a code offered by retailers to customers who can use it to receive a discounted price when buying products online.
  • proper adjective — an adjective formed from a proper noun, as American from America.
  • pseudo-patriotic — of, like, suitable for, or characteristic of a patriot.
  • pseudo-realistic — interested in, concerned with, or based on what is real or practical: a realistic estimate of costs; a realistic planner.
  • 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
  • pyroracemic acid — pyruvic acid.
  • pyrovanadic acid — an oxyacid of vanadium, known chiefly in the form of its vanadate salts; Formula: H4V2O7
  • quasi-democratic — pertaining to or of the nature of democracy or a democracy.
  • radio microphone — a microphone incorporating a radio transmitter so that the user can move around freely
  • radio-controlled — A radio-controlled device works by receiving radio signals which operate it.
  • radiographically — the production of radiographs.
  • radiosymmetrical — radially symmetrical.
  • radius of action — the maximum distance that a ship, aircraft, or land vehicle can travel from its base and return without refuelling
  • re-accreditation — to ascribe or attribute to (usually followed by with): He was accredited with having said it.
  • rearguard action — an action fought by a rearguard
  • reconceptualized — to form into a concept; make a concept of.
  • rectus abdominis — a long flat muscle that extends along the whole length of both sides of the abdomen. It flexes the vertebral column, particularly the lumbar portion; it also tenses the anterior abdominal wall and assists in compressing the abdominal contents
  • reidentification — an act or instance of identifying; the state of being identified.
  • ribonucleic acid — RNA.
  • risus sardonicus — fixed contraction of the facial muscles resulting in a peculiar distorted grin, caused esp by tetanus
  • roundabout chair — corner chair.
  • sangre de cristo — a mountain range in S Colorado and N New Mexico: a part of the Rocky Mountains. Highest peak, Blanca Peak, 14,390 feet (4385 meters).
  • scar tissue code — (humour, programming)   Old code that is commented out but still included in the current release.
  • secondary tissue — tissue derived from cambium.
  • sedimentary rock — rock formed from compacted minerals
  • self-deprecation — belittling or undervaluing oneself; excessively modest.
  • shakedown cruise — extortion, as by blackmail or threats of violence.
  • slang dictionary — a specialized dictionary covering the words, phrases, and idioms that reflect the least formal speech of a language. These terms are often metaphorical and playful, and are likely to be evanescent as the spoken language changes from one generation to another. Much slang belongs to specific groups, as the jargon of a particular class, profession, or age group. Some is vulgar. Some slang terms have staying power as slang, but others make a transition into common informal speech, and then into the standard language. An online slang dictionary, such as the Dictionary.com Slang Dictionary, provides immediate information about the meaning and history of a queried term and its appropriateness or lack of appropriateness in a range of social and professional circumstances.
  • social darwinism — a 19th-century theory, inspired by Darwinism, by which the social order is accounted as the product of natural selection of those persons best suited to existing living conditions and in accord with which a position of laissez-faire is advocated.
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