9-letter words containing o, r, a
- archabbot — In certain Catholic (notably Benedictine) congregations, the title of the general superior, ranking above all other abbots, vested in a particular abbey, which hence is called an archabbey (usually its motherhouse, such as Beuron, which gave its name to a Benedictine congregation).
- archaeol. — archaeology
- archilowe — a treat, such as a drink, given in return for something
- archivolt — a moulding around an arch, sometimes decorated
- archology — the study of the origins of things
- archontic — relating to an archon
- archosaur — any of a group of reptiles consisting of dinosaurs, pterosaurs, modern birds, modern crocodiles and extinct relatives of crocodiles, all having a diapsid skull
- archstone — a wedge-shaped stone forming the curved part of an arch
- arcograph — an instrument used for drawing arcs without using a central point
- arcsecond — unit used in astronomy
- arctogaea — a zoogeographical area comprising the Palaearctic, Nearctic, Oriental, and Ethiopian regions
- arcuation — the use of arches or vaults in buildings
- arduously — requiring great exertion; laborious; difficult: an arduous undertaking.
- area code — The area code for a particular city or region is the series of numbers that you have to dial before someone's personal number if you are making a telephone call to that place from a different area.
- arecoline — a drug derived from betel nuts and producing a range of effects, including increased salivation, body temperature, and heart rate
- arenation — the use of hot sand as a medical poultice
- areolated — marked by areolae
- areopagus — the hill to the northwest of the Acropolis in Athens
- areostyle — (of columned buildings) having a wide intercolumniation equal to four or more diameters of one of the columns
- argan oil — a yellow nutty-flavoured oil extracted from the ripe green olive-like fruits of the argan tree, Argania spinosa of SW Morocco, and used in cooking, medicines, and cosmetics
- argentous — of or containing silver in the monovalent state
- argonauts — Classical Mythology. a member of the band of men who sailed to Colchis with Jason in the ship Argo in search of the Golden Fleece.
- argue out — If two or more people argue something out, they discuss it or thoroughly in order to reach a conclusion or decision.
- arid zone — either of the zones of latitude 15–30° N and S characterized by very low rainfall and desert or semidesert terrain
- aristotle — a bottle
- arlington — a county of N Virginia: site of Arlington National Cemetery
- armadillo — An armadillo is a small animal whose body is covered with large bony scales and which rolls itself into a ball when it is attacked. Armadillos are mainly found in South and Central America.
- armorican — a native or inhabitant of Armorica
- armorless — any covering worn as a defense against weapons.
- armourers — Plural form of armourer.
- armouries — a drill hall used for training and as headquarters by a reserve unit of the armed forces
- armstrong — Edwin Howard. 1890–1954, US electrical engineer; invented the superheterodyne radio receiver and the FM radio
- army worm — any of the larvae of certain noctuid moths, esp. of the moth (Pseudaletia unipuncta) of which the caterpillar is dark-striped green and yellow: these larvae travel in large groups, ruining crops and grass
- armyworms — Plural form of armyworm.
- arnoldson — Klas Pontus [klahs pawn-tuh s] /klɑs ˈpɔn təs/ (Show IPA), 1844–1916, Swedish author and politician: Nobel Peace Prize 1908.
- aromantic — Not given to experiencing romantic attraction to others.
- aromatase — an enzyme that converts testosterone into an oestrogen
- aromatics — Plural form of aromatic.
- aromatise — Alternative spelling of aromatize.
- aromatize — to make aromatic
- aroostook — river in N Me., flowing into the St. John River in New Brunswick, Canada: c. 140 mi (225 km)
- arousable — able to be aroused
- arpeggios — Plural form of arpeggio.
- arrestors — Plural form of arrestor.
- arrogance — the quality or state of being arrogant; overbearing pride or self-importance
- arrogancy — offensive display of superiority or self-importance; overbearing pride.
- arrogated — Simple past tense and past participle of arrogate.
- arrogates — Third-person singular simple present indicative form of arrogate.
- arrow key — (hardware) One of four keys on a keyboard marked with arrows pointing up, down, left and right. The arrow keys are used for such things as moving the cursor in a text document, for moving the input focus between the fields of a form or sometimes for scrolling a picture.
- arrowhead — An arrowhead is the sharp, pointed part of an arrow.