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15-letter words containing r, a, i, n

  • antitranspirant — any substance that decreases transpiration and, usually, photosynthesis
  • antitrinitarian — rejecting or opposed to the Christian doctrine of the Holy Trinity
  • antituberculous — (medicine) Acting to combat or counteract tuberculosis.
  • aortic stenosis — abnormal narrowing of the aorta, especially of its orifice, usually as a result of rheumatic fever or embryologic anomalies.
  • apolipoproteins — Plural form of apolipoprotein.
  • appeal tribunal — An appeal tribunal is a special court or committee that is formed to reconsider a decision made by another court or committee.
  • appendicularian — of or relating to a family of molluscs (Appendicularia) characterized by their long tail appendages
  • apprentice work — work done when young and a novice
  • apprenticeships — Plural form of apprenticeship.
  • appropinquation — the action of approaching
  • appropriateness — suitable or fitting for a particular purpose, person, occasion, etc.: an appropriate example; an appropriate dress.
  • approval rating — approval of a politician as shown by opinion polls
  • approximateness — The quality of being approximate.
  • arabian jasmine — a climbing shrub, Jasminum sambac, of India, having hairy branches and very fragrant white flowers that turn purple with age, used in making jasmine tea; sampaguita.
  • arabic numerals — the figures 1, 2, 3, 4, 5, 6, 7, 8, 9, and the 0 (zero) that originated in India; Hindu-Arabic numerals
  • arbitration bar — a bar of cast iron used as a sample for the batch to which it belongs.
  • archaeobotanist — A person engaged in archaeobotany.
  • architectonical — Alternative form of architectonic.
  • argumentatively — fond of or given to argument and dispute; disputatious; contentious: The law students were an unusually argumentative group.
  • ariboflavinosis — a condition resulting from a dietary deficiency of riboflavin
  • aristotelianism — a philosophical tradition based on the wide-ranging belief system of Aristotle
  • arithmetic mean — an average value of a set of integers, terms, or quantities, expressed as their sum divided by their number
  • armenian church — the national Church of Armenia, founded in the early fourth century ad, the dogmas and liturgy of which are similar to those of the Orthodox Church
  • armour-piercing — capable of penetrating armour plate
  • arms inspection — the official checking of a country's weapons and other military equipment, usually to check that international agreements have been respected
  • arrivals lounge — a waiting area for people meeting passengers
  • arrondissements — Plural form of arrondissement.
  • arterialization — to convert (venous blood) into arterial blood by the action of oxygen in the lungs.
  • arthur brisbane — Arthur, 1864–1936, U.S. journalist.
  • artificial gene — a duplicate gene synthesized in the laboratory by combining nucleotides in a sequence characteristic of the copied gene.
  • artificialness' — made by human skill; produced by humans (opposed to natural): artificial flowers.
  • artillery plant — any of various tropical urticaceous plants of the genus Pilea, such as P. microphylla, all having stamens that discharge their pollen explosively
  • asian shorthair — a generic term for a group of breeds of short-haired cat of Burmese type, including the Bombay
  • asset-stripping — If a person or company is involved in asset-stripping, they buy companies cheaply, sell off their assets to make a profit, and then close the companies down.
  • astrodynamicist — a person who studies astrodynamics
  • astronautically — In an astronautic way.
  • astronavigation — celestial navigation
  • at first glance — If you say that something is true or seems to be true at first glance, you mean that it seems to be true when you first see it or think about it, but that your first impression may be wrong.
  • at right angles — If two things are at right angles, they are situated so that they form an angle of 90° where they touch each other. You can also say that one thing is at right angles to another.
  • at short notice — Notice is used in expressions such as 'at short notice', 'at a moment's notice' or 'at twenty-four hours' notice', to indicate that something can or must be done within a short period of time.
  • atlantic ridley — ridley (def 1).
  • atlantic-ridley — ridley (def 1).
  • atrabiliousness — The state or quality of being characterized by melancholy or glumness.
  • audience rating — a figure based on statistical sampling indicating what proportion of the total listening and viewing audience tune in to a specific programme or network
  • audio frequency — a frequency in the range 20 hertz to 20 000 hertz. A sound wave of this frequency would be audible to the human ear
  • audio recording — an electronic recording of sound
  • auditor general — (in Canada) a federal official responsible for auditing government departments and making an annual report
  • auf wiedersehen — goodbye, until we see each other again
  • australian alps — a mountain range in SE Australia, in E Victoria and SE New South Wales. Highest peak: Mount Kosciuszko, 2195 m (7316 ft)
  • australian mist — a breed of medium-sized cat with a short spotted or marbled coat
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