12-letter words containing o, t, r
- apochromatic — (of a lens) almost free from spherical and chromatic aberration
- apostle bird — a gregarious grey-and-brown Australian nest-building bird, Struthidea cinerea
- apostrophise — to address by apostrophe.
- apostrophize — to address an apostrophe to
- apothecaries — Plural form of apothecary.
- apparitional — of or relating to an apparition or apparitions; ghostly, spectral
- appeal court — An appeal court is the same as a Court of Appeal.
- apperception — the attainment of full awareness of a sensation or idea
- appoggiatura — an ornament consisting of a nonharmonic note (short or long) preceding a harmonic one either before or on the stress
- apportioning — Present participle of apportion.
- appreciation — Appreciation of something is the recognition and enjoyment of its good qualities.
- appreciators — to be grateful or thankful for: They appreciated his thoughtfulness.
- appreciatory — appreciative.
- approachment — (archaic) approach.
- approbations — approval; commendation.
- appropriated — suitable or fitting for a particular purpose, person, occasion, etc.: an appropriate example; an appropriate dress.
- appropriates — suitable or fitting for a particular purpose, person, occasion, etc.: an appropriate example; an appropriate dress.
- appropriator — suitable or fitting for a particular purpose, person, occasion, etc.: an appropriate example; an appropriate dress.
- approximated — near or approaching a certain state, condition, goal, or standard.
- approximates — near or approaching a certain state, condition, goal, or standard.
- approximator — Something that approximates.
- apricot tart — a pastry case filled with apricots
- apron string — a string for tying an apron on
- araeosystyle — (of columned buildings) having an alternately very wide and very narrow intercolumniation
- arba kanfoth — a rectangular piece of cloth with fringes at the four corners and a hole in the center for the head, worn under the clothes by Orthodox Jewish males.
- arbitrations — Plural form of arbitration.
- arborization — a branching treelike appearance in certain fossils and minerals
- arc cosecant — the angle, measured in radians, that has a cosecant equal to a given number. Symbol: csc −1. Abbreviation: arc csc;
- arch support — a rigid support placed inside a shoe so that its molded form fits the arch of the foot and relieves strain on the muscles of the foot while walking, standing, etc.
- archaeometry — the use of science and modern technology in archaeology to examine and interpret archaeological remains
- archaization — Process of becoming or turning something more archaic.
- archegoniate — having archegonia
- archenterons — Plural form of archenteron.
- archeologist — archaeology.
- archeopteryx — A specimen of the species Archaeopteryx lithographica, being the earliest and most primitive known bird, representing a transition in the evolution of dinosaurs to birds.
- archibenthos — the ocean bottom between the littoral and abyssal zones: from depths of approximately 200 feet (60 meters) to 3300 feet (1000 meters).
- arctic ocean — the ocean surrounding the North Pole, north of the Arctic Circle. Area: about 14 100 000 sq km (5 440 000 sq miles)
- arctophilist — a collector of teddy bears
- arfvedsonite — a type of hornblende with the composition Na3(Fe,Mg)4FeSi8O22(OH)2
- aristocratic — Aristocratic means belonging to or typical of the aristocracy.
- aristolochia — any of various plants of the genus Aristolochia of the family Aristolochiaceae
- aristophanes — ?448–?380 bc, Greek comic dramatist, who satirized leading contemporary figures such as Socrates and Euripides. Eleven of his plays are extant, including The Clouds, The Frogs, The Birds, and Lysistrata
- aristophanic — 448?–385? b.c, Athenian comic dramatist.
- aristotelian — of or relating to Aristotle or his philosophy
- arithmomania — an obsessive desire to count objects, or a fixation with numbers and calculations
- armor-plated — An armor-plated vehicle or building has a hard metal covering in order to protect it from gunfire and other missiles.
- armour plate — a tough heavy steel, usually containing chromium, nickel, and molybdenum and often hardened on the surface, used for protecting warships, tanks, etc
- arms control — an agreement between two or more countries to reduce the number of weapons owned, with the aim of preventing war
- army cutworm — the larva of a noctuid moth, Chorizagrotis auxiliaris, that is a pest of wheat and alfalfa in the Plains states.
- aromatherapy — Aromatherapy is a type of treatment which involves massaging the body with special fragrant oils.