15-letter words containing c, a, t
- actinium series — a radioactive decay series that starts with uranium-235 and ends with lead-207
- actinochemistry — the branch of chemistry dealing with actinism; photochemistry.
- actinopterygian — belonging or pertaining to the Actinopterygii, a group of bony fishes.
- action painting — a development of abstract expressionism evolved in the 1940s, characterized by broad vigorous brush strokes and accidental effects of thrown, smeared, dripped, or spattered paint
- action reporter — a news reporter who reports to the public on matters of special interest to the consumer.
- action stations — the positions taken up by individuals in preparation for or during a battle
- active hydrogen — hydrogen in the form of single atoms, rather than molecules, which makes it extremely reactive.
- active immunity — immunity (to a disease) due to the production of antibodies by the body
- activity method — a type of teaching in which students acquire knowledge and understanding by participating in a set of specially designed activities, rather than by passively listening to a teacher
- activity series — a table of metals, listed in the order of their ability to replace other metals while in solution
- actual argument — (programming) A value, expression, or reference passed to a function or subroutine when it is called and which replaces or is bound to the corresponding formal argument. See: argument.
- acute bisectrix — See under bisectrix (def 1).
- acyclic terpene — (originally) any of a class of monocyclic hydrocarbons of the formula C 10 H 16 , obtained from plants.
- adaptive optics — a technique used to increase the resolution of a ground-based astronomical telescope by counteracting the effects of the atmosphere on the image. A deforming mirror in the light path of the telescope maintains a pointlike image of the celestial body using either a real star or a laser beam as a reference
- adenoidectomies — Plural form of adenoidectomy.
- adhesive factor — the ratio of the force that can be exerted on driving wheels with full traction to the weight on the driving wheels, usually expressed as a percentage.
- adiabatic chart — a graph for the analysis of adiabatic processes.
- adjacent angles — two angles that have the same vertex and a side in common
- adjective group — An adjective group or adjectival group is a group of words based on an adjective, such as 'very nice' or 'interested in football'. An adjective group can also consist simply of an adjective.
- adjectivization — Grammar. to make into an adjective, as by adding a suffix: The noun mirth can be adjectivized by adding -ful or -less to form the adjectives mirthful and mirthless.
- admiralty cloth — melton cloth, used for coats and jackets, especially for the naval service.
- admiralty court — the court that has jurisdiction in matters relating to maritime law
- adoption agency — an agency that matches children needing adoption with people willing to adopt
- adrenalectomies — Plural form of adrenalectomy.
- adrenoreceptors — Plural form of adrenoreceptor.
- adult education — Adult education is education for adults in a variety of subjects, most of which are practical, not academic. Classes are often held in the evenings.
- advance payment — a sum of money paid in advance as a part or the whole of the sum due
- advanced credit — credit toward a degree allowed to a student by a college for courses taken elsewhere or for high scores on preliminary examinations
- advantage court — the receiver's left-hand service court, into which the ball is served when one side has the advantage.
- advent calendar — a large card with a brightly coloured sometimes tinselled design on it that contains small numbered doors for children to open on each of the days of Advent, revealing pictures beneath them
- advocate depute — a Scottish law officer with the functions of public prosecutor
- aegyptopithecus — a genus of extinct anthropoid ape of the Oligocene Period known from remains found in Egypt.
- aerodynamicists — Plural form of aerodynamicist.
- aeroplane cloth — a strong fabric made from cotton, linen, and nylon yarns, used for some light aircraft fuselages and wings
- afternoon watch — the watch from noon until 4 p.m.
- aggregate score — a score calculated by adding the results of several matches
- agranulocytosis — a serious and sometimes fatal illness characterized by a marked reduction of leucocytes, usually caused by hypersensitivity to certain drugs
- agriculturalist — An agriculturalist is someone who is an expert on agriculture and who advises farmers.
- agulhas current — a fast, warm ocean current flowing southwest along the SE coast of Africa
- air conditioned — If a room or vehicle is air conditioned, the air in it is kept cool and dry by means of a special machine.
- air conditioner — An air conditioner is a machine which keeps the air in a building cool and dry.
- airborne attack — an attack involving airborne troops
- airconditioning — Alternative spelling of air conditioning.
- aircraft hangar — a large workshop or building for storing and maintaining aircraft
- airmail sticker — a sticker that is put on airmail letters to make sure they are not sent by surface mail
- akinetic mutism — a state of apparent alertness with normal eye movements but no speech or other voluntary motion, usually due to a stroke.
- alberta clipper — (in Canada) an area of low pressure that forms in winter near the Rocky Mountains
- alcohol content — the amount of alcohol that is present in an alcoholic drink
- alder buckthorn — a Eurasian rhamnaceous shrub, Frangula alnus, with small greenish flowers and black berry-like fruits
- algorithmically — Using an algorithm.