13-letter words containing a, u, r, t, i
- antiquitarian — an admirer of the practices of antiquity
- antireligious — opposed to religious ideas, beliefs, and organizations
- antirheumatic — acting against rheumatism
- antiritualism — opposed to ritualism
- antiscorbutic — preventing or curing scurvy
- antisubmarine — (of weapons, missiles, etc) designed to combat or destroy submarines
- antisudorific — an antiperspirant.
- aphanipterous — of or relating to the wingless insects of the order Aphaniptera
- appoggiaturas — Plural form of appoggiatura.
- appropinquate — to approach
- appropinquity — nearness
- aquaculturist — a person who practises aquaculture
- arboriculture — the cultivation of trees or shrubs, esp for the production of timber
- architectural — Architectural means relating to the design and construction of buildings.
- architectured — Designed (according to a form of architecture, or as if by an architect).
- architectures — Plural form of architecture.
- argentiferous — containing or bearing silver
- argumentation — Argumentation is the process of arguing in an organized or logical way, for example in philosophy.
- argumentative — Someone who is argumentative is always ready to disagree or start quarrelling with other people.
- armamentarium — the items that comprise the material and equipment used by a physician in his professional practice
- arseniuretted — combined with arsenic so as to form an arsenide.
- arteriovenous — of, relating to, or affecting an artery and a vein
- articulations — Plural form of articulation.
- assault rifle — a firearm that is capable of firing multiple rounds in a very short period
- astronautical — of or relating to astronautics or astronauts.
- atomic number — the number of protons in the nucleus of an atom of an element
- atrabilarious — Characterized by melancholy or gloom.
- atrociousness — The state of being atrocious.
- attitudinizer — One who attitudinizes, or practises poses.
- attributional — of or relating to the act of attributing
- attributively — pertaining to or having the character of attribution or an attribute.
- auctioneering — Present participle of auctioneer.
- australia day — a public holiday in Australia, commemorating the landing of the British in 1788: observed on January 26
- australianism — the Australian national character or spirit
- australianize — (esp of a new immigrant) to adopt or cause to adopt Australian habits and attitudes; integrate into Australian society
- austrian pine — an evergreen tree, Pina nigra austriaca
- austroasiatic — a family of languages spoken in SE Asia and the landsaround the Bay of Bengal and consisting principally of Vietnamese, Khmer, Mon, Khasi, Nicobarese, and the Munda languages.
- autapomorphic — (biology) Describing any characteristic that has evolved in only a single species (or other taxon).
- authenticator — a person or thing that authenticates.
- authorisation — Alternative spelling of authorization.
- authoritarian — If you describe a person or an organization as authoritarian, you are critical of them controlling everything rather than letting people decide things for themselves.
- authoritative — Someone or something that is authoritative gives an impression of power and importance and is likely to be obeyed.
- authorization — an authorizing or being authorized
- auto-injector — An auto-injector is a hypodermic syringe that you can use to inject yourself with a liquid.
- autobiography — Your autobiography is an account of your life, which you write yourself.
- autocatharsis — a therapeutic process designed to free unconscious disturbances by having the patient write about his or her experiences, impressions, etc.
- autoeroticism — the arousal and use of one's own body as a sexual object, as through masturbation
- autographical — Relating to, or used in, the process of autography.
- autoradiogram — autoradiograph
- autorickshaws — Plural form of autorickshaw.