12-letter words containing m, c, a
- apochromatic — (of a lens) almost free from spherical and chromatic aberration
- apothegmatic — Relating to, or in the manner of, an apothegm; sententious; pithy.
- appendectomy — the surgical removal of the vermiform appendix
- approachment — (archaic) approach.
- 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
- 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.
- archipallium — (anatomy) The oldest region of the brain's pallium, often considered contiguous with the olfactory cortex, but varying among species. In humans, the archipallium makes up the hippocampus.
- 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
- arithmetical — Arithmetical calculations, processes, or skills involve the addition, subtraction, multiplication, or division of numbers.
- armada chest — an iron or iron-bound strongbox of the 17th or 18th century.
- armed forces — The armed forces or the armed services of a country are its military forces, usually the army, navy, marines, and air force.
- arming chest — a chest for holding armor and weapons.
- 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
- aromatically — having an aroma; fragrant or sweet-scented; odoriferous.
- ascomycetous — belonging or pertaining to the Ascomycota.
- astigmoscope — astigmatoscope.
- 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.
- asymptomatic — If someone with a disease is asymptomatic, it means that they do not show any symptoms of the disease.
- asymptotical — of or relating to an asymptote.
- asynchronism — a lack of synchronism; occurrence at different times
- atmospherics — Atmospherics are elements in something such as a piece of music or a book which create a certain atmosphere.
- atomic clock — an extremely accurate clock in which an electrical oscillator is controlled by the natural vibrations of an atomic or molecular system such as caesium or ammonia
- atomic power — nuclear power.
- auction room — a room in a building where auctions take place
- autocomplete — a feature of a word processor, email program, web browser, etc., that automatically predicts the remaining characters in a word or phrase based on what has been typed or input before: If you supply the information, your browser will be able to use autocomplete to fill out online forms.
- automaticity — the condition of being automatic, or the degree of this
- autorhythmic — That generates its own rhythm.
- avitaminotic — of or relating to avitaminosis
- axiom schema — (logic) A formula in the language of an axiomatic system, containing one or more. These metasyntactic variables (or "schematic variables") that stand for terms or subformulae. An example is the Axiom of Comprehension.
- axisymmetric — being symmetrical around an axis
- azithromycin — A macrolide antibiotic derived from erythromycin.
- bach trumpet — a modern small three-valved trumpet for playing clarino passages in Bach's music
- back molding — a molding, as a backband, applied to interior window and door trim to conceal the edge of the wall surface.
- 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.
- backswimmers — Plural form of backswimmer.
- backswordman — a person who uses a backsword.
- backwoodsman — Backwoodsmen are people, especially politicians, who like the old ways of doing things, or who are involved in an organization at a local level.
- backwoodsmen — Plural form of backwoodsman.
- balance beam — a long, narrow, horizontal wooden beam raised about 4 feet (1.2 m) above the floor, on which women gymnasts perform balancing routines consisting of jumps, tumbles, turns, running steps, etc.