17-letter words containing a, c, r, o, i
- amphidromic point — a point of almost zero tidal fluctuation on the ocean surface, represented on a chart of cotidal lines by a point from which these lines radiate.
- anabolic steroids — a synthetic derivative of testosterone, sometimes used by athletes to help increase weight and strength.
- anachronistically — In an anachronistic manner; in the manner of an anachronism.
- analytic geometry — the branch of geometry in which a coordinate graphing system makes visible, using points, lines, and curves, the numerical relationships of algebraic equations
- angiocardiography — the making of X-ray pictures of the heart and its blood vessels after injecting a radiopaque substance
- angle of friction — the angle of a plane to the horizontal when a body placed on the plane will just start to slide. The tangent of the angle of friction is the coefficient of static friction
- anionic detergent — any of a class of synthetic compounds whose anions are alkali salts, as soap, or whose ions are ammonium salts.
- anthracosilicosis — a form of pneumoconiosis occurring in miners, caused by the inhalation of coal and siliceous particles.
- anthropogenically — In an anthropogenic way.
- anthropologically — the science that deals with the origins, physical and cultural development, biological characteristics, and social customs and beliefs of humankind.
- anthroposemiotics — The study of human communication.
- anti-carcinogenic — any substance or agent that tends to produce a cancer.
- anti-conservatism — the disposition to preserve or restore what is established and traditional and to limit change.
- anti-conservative — disposed to preserve existing conditions, institutions, etc., or to restore traditional ones, and to limit change.
- anticipatory loss — grief that is felt in anticipation of someone's death
- antiferromagnetic — noting or pertaining to a substance in which, at sufficiently low temperatures, the magnetic moments of adjacent atoms point in opposite directions.
- antimycobacterial — (medicine) That counteracts the effects of mycobacteria.
- apostolic fathers — the Fathers of the early Church who immediately followed the Apostles
- application layer — (networking) The top layer of the OSI seven layer model. This layer handles issues like network transparency, resource allocation and problem partitioning. The application layer is concerned with the user's view of the network (e.g. formatting electronic mail messages). The presentation layer provides the application layer with a familiar local representation of data independent of the format used on the network.
- appointed actuary — An appointed actuary is an actuary appointed by a life insurance company, whose main role is to carry out a regular valuation of the reserves held to pay future policy benefits.
- archconfraternity — a confraternity having the right to associate itself with confraternities that are similar to it, and to impart to them its privileges and indulgences.
- archconservatives — Plural form of archconservative.
- architectonically — In terms of architectonics.
- aristolochiaceous — belonging to the Aristolochiaceae, the birthwort family of plants.
- armature reaction — a change in the magnetic field of a dynamo caused by the magnetic field induced by the current flowing through the armature.
- armchair shopping — buying goods using a computer, telephone, or television in the home or via the postal system
- aromatic compound — an organic compound that contains one or more benzene or equivalent heterocyclic rings: many such compounds have an agreeable odor.
- arresting officer — the police officer making an arrest
- arsenic poisoning — poisoning by arsenic
- articulated joint — Anatomy. a flexible joint.
- articulated lorry — a lorry made in two separate sections, a tractor and a trailer, connected by a pivoted bar
- articulatory loop — a short-term memory system that enables a person to remember short strings of words by rehearsing them repeatedly in his head
- artificial person — a human being, whether an adult or child: The table seats four persons.
- artistic director — a person in charge of the artistic direction of a theatre company
- as the crow flies — If you say that a place is a particular distance away as the crow flies, you mean that it is that distance away measured in a straight line.
- ascertained goods — specific goods
- associate of arts — a degree granted especially by junior colleges after completion of two years of study. Abbreviation: A.A.
- association fiber — any of several nerve fibers connecting different areas of the cerebral cortex in the same hemisphere.
- associative array — (programming) (Or "hash", "map", "dictionary") An array where the indices are not just integers but may be arbitrary strings.
- astral projection — the departure of the astral body from the physical body, in order to travel to the astral plane
- astronomical unit — a unit of distance used in astronomy equal to the mean distance between the earth and the sun. 1 astronomical unit is equivalent to 1.495 × 1011 metres or about 9.3 × 107 miles
- astronomical year — year (def 4b).
- at the service of — To be at the service of a person or organization means to be available to help or be used by that person or organization.
- attorneys-in-fact — a person authorized by power of attorney to act on the authorizer's behalf outside a court of law.
- attraction sphere — centrosphere (sense 1)
- audio description — a facility provided for visually impaired people in which a film, television programme, or play is described through audio technology
- aurea mediocritas — the golden mean.
- australopithecine — any of various extinct apelike primates of the genus Australopithecus and related genera, remains of which have been discovered in southern and E Africa. Some species are estimated to be over 4.5 million years old
- authority control — the establishment and maintainance of consistent forms of terms, as of names, subjects, and titles, to be used as headings in bibliographic records.
- autocorrelational — Of or pertaining to autocorrelation.