12-letter words containing m, a, t, r
- antirrhinums — Plural form of antirrhinum.
- antisymmetry — the correspondence in size, form, and arrangement of parts on opposite sides of a plane, line, or point; regularity of form or arrangement in terms of like, reciprocal, or corresponding parts.
- antithrombin — a substance that counteracts the action of thrombin, preventing the formation of blood clots
- antitumoural — acting against or upon tumours
- apartmentize — to build apartments on or in: to apartmentize the downtown area.
- apochromatic — (of a lens) almost free from spherical and chromatic aberration
- appraisement — the act of estimating or judging the nature or value of something or someone.
- 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.
- arc spectrum — a spectrum formed from the light produced by an electric arc, characteristic of the gas or vapor through which the arc passes.
- archaeometry — the use of science and modern technology in archaeology to examine and interpret archaeological remains
- arithmetical — Arithmetical calculations, processes, or skills involve the addition, subtraction, multiplication, or division of numbers.
- arithmomania — an obsessive desire to count objects, or a fixation with numbers and calculations
- arm's-length — lacking intimacy or friendliness, esp when possessing some special connection, such as previous closeness
- arm-twisting — persuasion
- armada chest — an iron or iron-bound strongbox of the 17th or 18th century.
- armamentaria — the aggregate of equipment, methods, and techniques available to one for carrying out one's duties: The stethoscope is still an essential part of the physician's armamentarium.
- arming chest — a chest for holding armor and weapons.
- 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.
- aromatically — having an aroma; fragrant or sweet-scented; odoriferous.
- arraignments — Plural form of arraignment.
- arrangements — preparatory measures taken or plans made; preparations
- arrival time — the time when someone or something arrives, arrived, or will arrive
- art mobilier — small, movable art objects, especially primitive or prehistoric works of art.
- arteriograms — Plural form of arteriogram.
- arthrotomies — Plural form of arthrotomy.
- artilleryman — a serviceman who serves in an artillery unit
- artillerymen — Plural form of artilleryman.
- assimilators — Plural form of assimilator.
- assimilatory — characterized by assimilation; assimilating.
- astigmatizer — a cylindrical lens used in a rangefinder to draw out the point image of a point source into a line.
- 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.
- asymmetrical — Something that is asymmetrical has two sides or halves that are different in shape, size, or style.
- at a premium — If something is at a premium, it is wanted or needed, but is difficult to get or achieve.
- 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.