12-letter words containing m, o, r, a
- appressorium — a flattened hypha of a parasitic fungus that penetrates the host tissues
- approachment — (archaic) approach.
- 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.
- araneomorphs — Plural form of araneomorph.
- archaeometry — the use of science and modern technology in archaeology to examine and interpret archaeological remains
- archaic homo — collectively, the very robust, regionally differentiated human populations that lived in Europe, Asia, the Middle East, and Africa from 35,000 to 200,000 years ago.
- archesporium — archespore.
- archiphoneme — an abstract linguistic unit representing two or more phonemes when the distinction between these has been neutralized: conventionally shown by a capital letter within slashes, as /T/ for /t/ and /d/ in German Rat and Rad
- area bombing — aerial bombing in which bombs are dropped over the general area of a target.
- arithmomania — an obsessive desire to count objects, or a fixation with numbers and calculations
- armed forces — The armed forces or the armed services of a country are its military forces, usually the army, navy, marines, and air force.
- armor-plated — An armor-plated vehicle or building has a hard metal covering in order to protect it from gunfire and other missiles.
- armored rope — rope made of wire-wrapped hempen strands that is used in salvage work.
- armour plate — a tough heavy steel, usually containing chromium, nickel, and molybdenum and often hardened on the surface, used for protecting warships, tanks, etc
- armourbearer — One who carries armor for another.
- armoured car — a fast lightly armed and armoured vehicle, mainly used for reconnaissance
- 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.
- army officer — a person in the army who holds a position of authority, responsibility and duty, especially one who holds a commission
- aromatherapy — Aromatherapy is a type of treatment which involves massaging the body with special fragrant oils.
- aromatically — having an aroma; fragrant or sweet-scented; odoriferous.
- art mobilier — small, movable art objects, especially primitive or prehistoric works of art.
- arteriograms — Plural form of arteriogram.
- arthrotomies — Plural form of arthrotomy.
- assimilators — Plural form of assimilator.
- assimilatory — characterized by assimilation; assimilating.
- astigmometer — an apparatus for measuring the degree of astigmatism.
- astrochemist — (chemistry, astronomy) A chemist or astronomer whose speciality is astrochemistry.
- astrocompass — a navigational instrument for giving directional bearings from the centre of the earth to a particular star. It is carried in long-range aircraft, ships, spacecraft, etc
- astrocytomas — Plural form of astrocytoma.
- astrodynamic — Pertaining to astrodynamics.
- astronomical — If you describe an amount, especially the cost of something as astronomical, you are emphasizing that it is very large indeed.
- asynchronism — a lack of synchronism; occurrence at different times
- atheromatous — a sebaceous cyst.
- atmospherics — Atmospherics are elements in something such as a piece of music or a book which create a certain atmosphere.
- atmospherium — an optical system used to simulate images of atmospheric phenomena, as cloud formations, storms, and day and night, on the inside of a dome.
- atom smasher — accelerator (sense 3)
- atomic power — nuclear power.
- auction room — a room in a building where auctions take place
- autapomorphy — (cladistics) A derived trait that is unique to a particular taxon.
- auto-erotism — the arousal and satisfaction of sexual excitement within or by oneself, as by masturbation.
- automorphism — the practice of seeing others as having the same characteristics as oneself
- autorhythmic — That generates its own rhythm.
- azithromycin — A macrolide antibiotic derived from erythromycin.
- baby monitor — a device that transmits sounds made by a baby to another room
- backcourtman — any of the players stationed in the backcourt; a guard
- backroom boy — You can refer to a man as a backroom boy when he does important work in an organization and has good ideas but is not seen or known about by the public.
- backswordman — a person who uses a backsword.