12-letter words containing o, a, t
- array theory — (theory) A theory developed by Trenchard More Jr. and used as the basis for the NIAL language. Papers are available from the IBM Cambridge Scientific Center, Cambridge MA.
- arsenopyrite — a white or grey metallic mineral consisting of a sulphide of iron and arsenic that forms monoclinic crystals with an orthorhombic shape: an ore of arsenic. Formula: FeAsS
- arson attack — an attack when property is set fire to
- art director — a person responsible for the sets and costumes in a film
- art mobilier — small, movable art objects, especially primitive or prehistoric works of art.
- arteriograms — Plural form of arteriogram.
- arteriopathy — Any disease of the arteries.
- arthrobacter — a genus of rod-shaped or spherical bacteria found in the soil.
- arthrography — the X-ray examination of a joint after injection of a contrast medium into the joint space
- arthropathic — disease of the joints.
- arthroplasty — surgical repair of a diseased joint
- arthroscopes — Plural form of arthroscope.
- arthroscopic — the use of an arthroscope to diagnose an injury to or disease of a joint or to perform minor surgery on a joint.
- arthrospores — an isolated vegetative cell that has passed into a resting state, occurring in bacteria and not regarded as a true spore.
- arthrotomies — Plural form of arthrotomy.
- articulation — Articulation is the action of producing a sound or word clearly, in speech or music.
- articulators — Plural form of articulator.
- articulatory — an act or the process of articulating: the articulation of a form; the articulation of a new thought.
- artiodactyle — (zoology) One of the Artiodactyla, a group of ungulates.
- artiodactyls — Plural form of artiodactyl.
- arts council — an organization that provides funding for a variety of arts activities
- asbestos mat — a heat-proof mat
- ascensionist — a person who has completed a mountain ascent, esp a notable one
- ascomycetous — belonging or pertaining to the Ascomycota.
- aspect ratio — the ratio of width to height of the picture on a television or cinema screen
- asphalt rock — a rock formation, usually of limestone or sandstone, containing large amounts of bitumens.
- asphyxiation — Asphyxiation is a lack of oxygen in blood, which causes suffocation.
- aspirational — If you describe someone as aspirational, you mean that they have strong hopes of moving to a higher social status.
- assassinator — a person who assassinates
- assault boat — a portable boat used for landing troops on beaches and for crossing rivers.
- assentaneous — having a tendency to agree, comply or acquiesce
- assertations — Plural form of assertation.
- asseveration — the act of asseverating.
- assibilation — (linguistics) A sound change resulting in a sibilant consonant, commonly the final phase of palatalization.
- assignations — Plural form of assignation.
- assimilation — an assimilating or being assimilated
- assimilators — Plural form of assimilator.
- assimilatory — characterized by assimilation; assimilating.
- assimulation — Obsolete form of assimilation.
- associations — Plural form of association.
- assortedness — the position of being sorted, grouped or harmonized with, well or badly, or provided with a good or bad assortment or mixture
- assuefaction — the condition of being or becoming familiar with or used to something
- astacologist — a person who investigates and analyses crayfish
- astanga yoga — a revived ancient form of yoga that involves a fast and powerful series of movements
- astigmometer — an apparatus for measuring the degree of astigmatism.
- astigmoscope — astigmatoscope.
- astonishable — (obsolete) Astonishing.
- astonishment — Astonishment is a feeling of great surprise.
- astoundingly — capable of overwhelming with amazement; stunningly surprising.
- astrobiology — the branch of biology that investigates the possibility of life elsewhere in the universe