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13-letter words containing a, e, o, n, i

  • apportionment — the act of apportioning
  • appreciations — Plural form of appreciation.
  • apprehensions — Plural form of apprehension.
  • appropinquate — to approach
  • aqua ammoniae — ammonia (def 2).
  • arabian horse — one of a breed of horses, raised originally in Arabia and adjacent countries, noted for intelligence, grace, and speed.
  • arachnephobia — Misspelling of arachnophobia.
  • archaeologian — (archaic) An archaeologist.
  • architectonic — denoting, relating to, or having architectural qualities
  • argentiferous — containing or bearing silver
  • argumentation — Argumentation is the process of arguing in an organized or logical way, for example in philosophy.
  • aristolochene — (organic compound) A bicyclic sesquiterpene produced by certain fungi.
  • arsenous acid — a toxic white powder, As2O3, used to make other arsenic compounds, insecticides, and preservatives; white arsenic
  • arteriovenous — of, relating to, or affecting an artery and a vein
  • arundinaceous — resembling a reed
  • as we know it — If you talk about a thing or system as we know it, you are referring to the form in which it exists now and which is familiar to most people.
  • ascension day — the 40th day after Easter, when the Ascension of Christ into heaven is celebrated
  • ascensiontide — the ten days from Ascension Day to the day before Whit Sunday
  • ascoli piceno — a town in E central Italy, in the Marches: capital of the Roman province of Picenum; site of the massacre of all its Roman citizens in the Social War in 90 bc. Pop: 51 375 (2001)
  • assiduousness — constant; unremitting: assiduous reading.
  • astereognosis — inability to recognize objects by touch
  • astonishments — Plural form of astonishment.
  • at knifepoint — If you are attacked or robbed at knifepoint, someone threatens you with a knife while they attack or steal from you.
  • aten asteroid — one of a small group of asteroids whose orbits cross that of the earth and whose semimajor axes are smaller than that of the earth.
  • athenagoras i — (Aristocles Spyrou) 1886–1972, Archbishop Ecumenical of Constantinople and Ecumenical Patriarch of the Greek Orthodox Church 1948–72.
  • atherogenesis — (medicine) The formation of atheromas, especially on the walls of the arteries.
  • atomic energy — nuclear energy
  • atomic number — the number of protons in the nucleus of an atom of an element
  • atomic weapon — a weapon in which energy is provided by nuclear fission
  • atrociousness — The state of being atrocious.
  • auction house — a commercial company that specializes in selling items at auction
  • auctioneering — Present participle of auctioneer.
  • audaciousness — Risky or daring behaviour.
  • audience room — a room for holding formal interviews or hearings.
  • augmentations — Plural form of augmentation.
  • authenticator — a person or thing that authenticates.
  • auto-injector — An auto-injector is a hypodermic syringe that you can use to inject yourself with a liquid.
  • autodigestion — (biology) The digestion of tissue by enzymes produced by the organism itself.
  • autoinfection — infection by a pathogenic agent already within the body or infection transferred from one part of the body to another
  • automatonlike — Like an automaton; robotic.
  • automechanism — an automatic mechanical system or component, especially a device that operates automatically under predetermined conditions.
  • averruncation — the act of averting or turning away
  • aviation fuel — fuel used to power airplanes
  • back emission — the secondary emission of electrons from an anode
  • backbone site — A key Usenet, electronic mail and/or Internet site; one that processes a large amount of third-party traffic, especially if it is the home site of any of the regional coordinators for the Usenet maps. Notable backbone sites as of early 1993 include uunet and the mail machines at Rutgers University, UC Berkeley, DEC's Western Research Laboratories, Ohio State University and the University of Texas. Compare rib site, leaf site.
  • backing store — a computer storage device, usually a disk, that provides additional storage space for information so that it can be accessed and referred to when required and may be copied into the processor if needed
  • bacteriogenic — Caused by bacteria.
  • bacteriolysin — an antibody which, when it combines with bacterial cells, causes lysis of those cells, thus destroying them
  • bacteriotoxin — any toxin that kills bacteria
  • bacterization — subjection to bacterial action
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