15-letter words containing a, c, r, s
- americanologist — a foreign expert or specialist in American cultural or political matters: a leading Americanologist in the Kremlin.
- amery ice shelf — an ice barrier in Antarctica, in the SW Indian Ocean, bordered by Enderby Land on the N and American Highland on the W.
- anacostia river — a river in the District of Columbia flowing into the Potomac River. about 24 miles (39 km) long.
- analogous color — Art. any one of a group of related colors that are near each other on the color wheel, a circular chart that shows gradations of color: Red, orange, and yellow are analogous colors. Compare complementary color (def 1a).
- anamorphic lens — a component in the optical system of a film projector for converting standard 35mm film images into wide-screen format
- ancient history — Ancient history is the history of ancient civilizations, especially Greece and Rome.
- andromonoecious — (of a plant species) having hermaphrodite and male flowers on the same plant
- aneroid capsule — a box or chamber of thin metal, partially exhausted of air, used in the aneroid barometer and pressure altimeter.
- anfractuosities — Plural form of anfractuosity.
- angina pectoris — a sudden intense pain in the chest, often accompanied by feelings of suffocation, caused by momentary lack of adequate blood supply to the heart muscle
- anisotropically — Physics. of unequal physical properties along different axes. Compare isotropic (def 1).
- annular eclipse — an eclipse of the sun in which the moon does not cover the entire disc of the sun, so that a ring of sunlight surrounds the shadow of the moon
- anthropometrics — the science of measuring the size and proportions of the human body (called anthropometry), especially as applied to the design of furniture and machines.
- anthropopsychic — the attribution of consciousness to divine beings and nature
- anti-censorship — the act or practice of censoring.
- anti-conformist — a person who conforms, especially unquestioningly, to the usual practices or standards of a group, society, etc.
- anti-historical — of, pertaining to, treating, or characteristic of history or past events: historical records; historical research.
- anti-radicalism — the holding or following of radical or extreme views or principles.
- antiaphrodisiac — something that represses sexual desire
- antiaristocracy — Opposed to the aristocracy.
- antiarrhythmics — Plural form of antiarrhythmic.
- anticarcinogens — Plural form of anticarcinogen.
- anticholesterol — an agent which acts against cholesterol, either as an antibody produced naturally by many mammals or in the form of a drug
- antichristianly — in an Antichristian manner
- anticlericalism — opposed to the influence and activities of the clergy or the church in secular or public affairs.
- antiforeclosure — opposed to the process of foreclosure
- antilock brakes — brakes fitted to some road vehicles that prevent skidding and improve control by sensing and compensating for overbraking
- antiperistaltic — reversed peristaltic action of the intestines, by which their contents are carried upward.
- antiromanticism — the opposition to romanticism
- antituberculous — (medicine) Acting to combat or counteract tuberculosis.
- aortic stenosis — abnormal narrowing of the aorta, especially of its orifice, usually as a result of rheumatic fever or embryologic anomalies.
- apical meristem — meristem at the apex of a root or shoot.
- apostle pitcher — a stoneware pitcher decorated in relief with figures of the apostles.
- apostles' creed — a concise statement of Christian beliefs dating from about 500 ad, traditionally ascribed to the Apostles
- apostolic vicar — vicar apostolic.
- apostrophically — (rhetoric) Using apostrophe; with sudden exclamatory dialogue.
- apprenticeships — Plural form of apprenticeship.
- approach lights — lights on the runway that guide planes coming in to land
- approved school — In Britain in the past, an approved school was a boarding school where young people could be sent to stay if they had been found guilty of a crime.
- arabic numerals — the figures 1, 2, 3, 4, 5, 6, 7, 8, 9, and the 0 (zero) that originated in India; Hindu-Arabic numerals
- archaeastronomy — (astronomy, archaeology) The historical, especially archeological, study of astronomy; the study of the astronomical systems and methods of ancient cultures often embracing the astrology and cosmology of the past.
- archaeobotanist — A person engaged in archaeobotany.
- archeoastronomy — the branch of archaeology that deals with the apparent use by prehistoric civilizations of astronomical techniques to establish the seasons or the cycle of the year, especially as evidenced in the construction of megaliths and other ritual structures.
- archiepiscopacy — a form of church government in which power is vested in archbishops.
- archiepiscopate — the rank, office, or term of office of an archbishop
- arms inspection — the official checking of a country's weapons and other military equipment, usually to check that international agreements have been respected
- army air forces — a unit comprising almost all aviation, with its personnel, equipment, etc.: it became part of the Air Force on July 26, 1947.
- array processor — (processor) (Or "vector processor") A computer, or extension to its arithmetic unit, that is capable of performing simultaneous computations on elements of an array or table of data in some number of dimensions. The IBM AltiVec (the "Velocity Engine" used in the Apple G4 computers) is a vector processor. Common uses for array processors include analysis of fluid dynamics and rotation of 3d objects, as well as data retrieval, in which elements of a database are scanned simultaneously. Array processors are very rare now (1998).
- articles of war — the disciplinary and legal procedures by which the naval and military forces of Great Britain were bound before the 19th century
- artificialness' — made by human skill; produced by humans (opposed to natural): artificial flowers.