11-letter words containing t, r, o, i, s
- apostlebird — an omnivorous bird, Struthidea cinerea, of eastern Australia, that has chiefly dark gray-brown plumage with white tail markings and is noted for its habit of traveling in groups of about 12 related individuals.
- apostrophic — a digression in the form of an address to someone not present, or to a personified object or idea, as “O Death, where is thy sting?”.
- apotropaism — the use of ritual or magic to ward off evil or bad luck
- apparations — Plural form of apparation.
- apparitions — Plural form of apparition.
- applicators — Plural form of applicator.
- aprioristic — belief in, or reliance upon, a priori reasoning, arguments, or principles.
- aqua fortis — nitric acid
- aquafortist — a person who makes engravings or etchings through the use of aqua fortis
- arbitrators — Plural form of arbitrator.
- arborvitaes — Plural form of arborvitae.
- aristocracy — The aristocracy is a class of people in some countries who have a high social rank and special titles.
- aristocrats — Plural form of aristocrat.
- aristoteles — a walled plain in the first quadrant of the face of the moon: about 60 miles (97 km) in diameter.
- arkeologist — Someone who studies the story of Noah's Ark, particularly by searching for physical evidence which would corroborate it.
- arrestation — the slowing or stopping of the development or progress of something
- ars poetica — the art of poetry
- art history — study of art through the ages
- arthrodesis — the fusion of bones in a joint through surgery which causes immobility of the joint
- asbestiform — having the look or structure of asbestos
- ascriptions — Plural form of ascription.
- asperations — Plural form of asperation.
- aspergation — the action of sprinkling, suffusing or irrigating with water
- asphyxiator — to produce asphyxia in.
- aspirations — a strong desire, longing, or aim; ambition: intellectual aspirations.
- asportation — the removal or taking away of something
- assertation — An assertion, statement of opinion.
- assimilator — to take in and incorporate as one's own; absorb: He assimilated many new experiences on his European trip.
- associators — Plural form of associator.
- assortative — Denoting or involving the preferential mating of animals or marrying of people with similar characteristics.
- asteroidean — an echinoderm of the class Asteroidea, comprising the starfishes.
- astraphobia — a fear of thunder and lightning
- astrogation — (in science fiction) navigation in outer space.
- astrologian — (obsolete) An astrologer.
- astrologist — the study that assumes and attempts to interpret the influence of the heavenly bodies on human affairs.
- astrometric — (astronomy) of or relating to astrometry.
- astronautic — Of or pertaining to astronautics.
- astronomize — to practise or study astronomy or engage in astronomical matters
- astrophobia — A fear of stars and celestial space.
- atmospheric — Atmospheric is used to describe something which relates to the Earth's atmosphere.
- atomtronics — (physics) The design, manufacture and study of analogs of electronics using atoms (especially Bose-Einstein condensates) at low temperature.
- atrabilious — irritable
- atrociously — extremely or shockingly wicked, cruel, or brutal: an atrocious crime.
- attorneyism — the slyness and cleverness associated with attorneys
- attractions — Plural form of attraction.
- auctioneers — Plural form of auctioneer.
- audiometers — Plural form of audiometer.
- auditoriums — Plural form of auditorium.
- auditorship — the position or function of auditor
- austronesia — the islands of the central and S Pacific, including Indonesia, Melanesia, Micronesia, and Polynesia