15-letter words containing t, r, i
- apprentice work — work done when young and a novice
- apprenticeships — Plural form of apprenticeship.
- approach lights — lights on the runway that guide planes coming in to land
- approachability — capable of being approached; accessible.
- appropinquation — the action of approaching
- appropriateness — suitable or fitting for a particular purpose, person, occasion, etc.: an appropriate example; an appropriate dress.
- approval rating — approval of a politician as shown by opinion polls
- approximateness — The quality of being approximate.
- arbitration bar — a bar of cast iron used as a sample for the batch to which it belongs.
- arc de triomphe — the triumphal arch in Paris begun by Napoleon I to commemorate his victories of 1805–6 and completed in 1836
- arch of triumph — Arc de Triomphe.
- archaebacterium — Any primitive bacteria-like organism in the kingdom Archaea.
- archaeobotanist — A person engaged in archaeobotany.
- archiepiscopate — the rank, office, or term of office of an archbishop
- architectonical — Alternative form of architectonic.
- architecturally — of or relating to architecture: architectural metals.
- argumentatively — fond of or given to argument and dispute; disputatious; contentious: The law students were an unusually argumentative group.
- aristotelianism — a philosophical tradition based on the wide-ranging belief system of Aristotle
- arithmetic mean — an average value of a set of integers, terms, or quantities, expressed as their sum divided by their number
- arms inspection — the official checking of a country's weapons and other military equipment, usually to check that international agreements have been respected
- arrondissements — Plural form of arrondissement.
- arterialization — to convert (venous blood) into arterial blood by the action of oxygen in the lungs.
- arthur brisbane — Arthur, 1864–1936, U.S. journalist.
- articles of war — the disciplinary and legal procedures by which the naval and military forces of Great Britain were bound before the 19th century
- artificial feel — a system, used in aircraft that have fully powered control surfaces, providing the pilot with simulated aerodynamic forces on the controls
- artificial gene — a duplicate gene synthesized in the laboratory by combining nucleotides in a sequence characteristic of the copied gene.
- artificial life — (algorithm, application) (a-life) The study of synthetic systems which behave like natural living systems in some way. Artificial Life complements the traditional biological sciences concerned with the analysis of living organisms by attempting to create lifelike behaviours within computers and other artificial media. Artificial Life can contribute to theoretical biology by modelling forms of life other than those which exist in nature. It has applications in environmental and financial modelling and network communications. There are some interesting implementations of artificial life using strangely shaped blocks. A video, probably by the company Artificial Creatures who build insect-like robots in Cambridge, MA (USA), has several mechanical implementations of artificial life forms. See also evolutionary computing, Life.
- artificial lift — Artificial lift is any method of increasing flow from a well.
- artificial turf — any of various synthetic, carpetlike materials made to resemble turf and used as a playing surface for football and baseball fields, to cover patios, etc.
- artificialness' — made by human skill; produced by humans (opposed to natural): artificial flowers.
- artillery plant — any of various tropical urticaceous plants of the genus Pilea, such as P. microphylla, all having stamens that discharge their pollen explosively
- ascribed status — the social position assigned to a person on the basis of kinship, ethnic group, sex, etc.
- asian shorthair — a generic term for a group of breeds of short-haired cat of Burmese type, including the Bombay
- asiatic cholera — cholera (def 1).
- asset-stripping — If a person or company is involved in asset-stripping, they buy companies cheaply, sell off their assets to make a profit, and then close the companies down.
- astrobiologists — Plural form of astrobiologist.
- astrodynamicist — a person who studies astrodynamics
- astronautically — In an astronautic way.
- astronavigation — celestial navigation
- astrophysically — from an astrophysical point of view
- astrophysicists — Plural form of astrophysicist.
- asymmetric bars — a pair of wooden or fibreglass bars placed parallel to each other but set at different heights, for various exercises
- asymmetric time — musical time consisting of an odd number of beats in each bar divided into uneven combinations, such as 3 + 2, 4 + 3, 2 + 3 + 2, etc
- at first glance — If you say that something is true or seems to be true at first glance, you mean that it seems to be true when you first see it or think about it, but that your first impression may be wrong.
- at right angles — If two things are at right angles, they are situated so that they form an angle of 90° where they touch each other. You can also say that one thing is at right angles to another.
- at short notice — Notice is used in expressions such as 'at short notice', 'at a moment's notice' or 'at twenty-four hours' notice', to indicate that something can or must be done within a short period of time.
- at the earliest — At the earliest means not before the date or time mentioned.
- at your service — You can use 'at your service' after your name as a formal way of introducing yourself to someone and saying that you are willing to help them in any way you can.
- atherosclerosis — a degenerative disease of the arteries characterized by patchy thickening of the inner lining of the arterial walls, caused by deposits of fatty material; a form of arteriosclerosis
- atherosclerotic — Of, pertaining to, or afflicted with atherosclerosis.