15-letter words containing i, 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
- 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.
- 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.
- adlai stevenson — Adlai Ewing [ad-ley yoo-ing] /ˈæd leɪ ˈyu ɪŋ/ (Show IPA), 1835–1914, vice president of the U.S. 1893–97.
- administrations — Plural form of administration.
- 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
- admiralty house — the official residence of the Governor General of Australia, in Sydney
- admiralty inlet — an arm of the Pacific Ocean in NW Washington, at the entry to Puget Sound.
- admiralty metal — an alloy of not less than 70 percent copper, about 1 percent tin, small amounts of other elements, and the balance zinc; tin brass.
- admiralty range — a mountain range in Antarctica, on the coast of Victoria Land, northwest of the Ross Sea
- adoption agency — an agency that matches children needing adoption with people willing to adopt
- adoption papers — documentation relating to the adoption of a particular child
- adrenalectomies — Plural form of adrenalectomy.
- 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.
- advanced credit — credit toward a degree allowed to a student by a college for courses taken elsewhere or for high scores on preliminary examinations
- advertising man — adman (def 1).
- aegyptopithecus — a genus of extinct anthropoid ape of the Oligocene Period known from remains found in Egypt.
- aerodynamicists — Plural form of aerodynamicist.
- aerotitis media — temporary deafness and pain arising from traumatic inflammation of the middle ear, caused by a rapid change in barometric pressure, as a rise in ambient cabin pressure in an aircraft descending from high altitude for landing.
- affine geometry — the branch of geometry dealing with affine transformations.
- affirmativeness — The property of being affirmative.
- after a fashion — If you say that something was done after a fashion, you mean that it was done, but not very well.
- age-appropriate — Something that is age-appropriate is suitable for the age that a person is.
- agranulocytosis — a serious and sometimes fatal illness characterized by a marked reduction of leucocytes, usually caused by hypersensitivity to certain drugs
- agree to differ — to end an argument amicably while maintaining differences of opinion
- agriculturalist — An agriculturalist is someone who is an expert on agriculture and who advises farmers.
- agro-industrial — the large-scale production, processing, and packaging of food using modern equipment and methods.
- 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.
- air-superiority — designating a fighter aircraft built for long patrol capability at high altitudes and supersonic speeds, with air-to-air combat as its principal mission.
- 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 edition — an edition of a newspaper that is printed on very thin paper so it is easier and cheaper to distribute