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18-letter words containing a, p, o, i

  • atmospheric window — wavelengths of the electromagnetic spectrum that can be transmitted through the earth's atmosphere. Atmospheric windows occur in the visible, infrared, and radio regions of the spectrum
  • auditory phonetics — the branch of phonetics concerned with the perception of speech sounds by humans
  • australopithecines — Plural form of australopithecine.
  • authorized capital — the total amount of value of the shares that a company is allowed to distribute
  • autobiographically — In a autobiographical manner.
  • autoignition point — the minimum temperature at which a substance will undergo spontaneous combustion.
  • automatic exposure — the automatic adjustment of the lens aperture and shutter speed of a camera by a control mechanism
  • avoirdupois weight — a British and American system of weights based on a pound of 16 ounces
  • axile placentation — a type of placenta structure in an ovary with the ovules forming at the angles where the septa join the central placenta
  • balanced computing — (jargon)   Matching computer tools to job activities so that the computer system structure parallels the organisation structure and work functions. Both personal computers and employees operate in a decentralised environment with monitoring of achievement of management objectives from centralised corporate systems.
  • band-tailed pigeon — a wild pigeon, Columba fasciata, of western North America, having a gray band on its tail.
  • baritone saxophone — the second lowest instrument in the family of saxophones
  • be in good company — If you say that someone is in good company, you mean that they should not be ashamed of a mistake or opinion, because some important or respected people have made the same mistake or have the same opinion.
  • beautiful hook-tip — a similar but unrelated species, Laspeyria flexula
  • beauty competition — a competition in which the participants, usually women, are judged on their attractiveness, with a prize, and often a title, awarded to the winner
  • behaviour patterns — the characteristic ways in which a person or animal acts
  • benchmark position — a public service job used for comparison with a similar position, such as a position in commerce, for wage settlements
  • bichromate process — any of several methods of photography in which the light-sensitive medium is alkaline bichromate associated with a colloid such as gum, albumen, or gelatin.
  • biological parents — the biological mother and father of a child
  • biological therapy — biotherapy
  • biomedical package — (language, library, statistics)   (BMDP) A statistical language and library of over forty statistical routines developed in 1961 at UCLA, Health Sciences Computing Facility under Dr. Wilford Dixon. BMDP was first implemented in Fortran for the IBM 7090. Tapes of the original source were distributed for free all over the world. BMDP is the second iteration of the original BIMED programs. It was developed at UCLA Health Sciences Computing facility, with NIH funding. The "P" in BMDP originally stood for "parameter" but was later changed to "package". BMDP used keyword parameters to defined what was to be done rather than the fixed card format used by original BIMED programs. BMDP supports many statistical funtions: simple data description, survival analysis, ANOVA, multivariate analyses, regression analysis, and time series analysis. BMDP Professional combines the full suite of BMDP Classic (Dynamic) release 7.0 with the BMDP New System 2.0 Windows front-end.
  • bipolar transistor — (electronics)   A transistor made from a sandwich of n- and p-type semiconductor material: either npn or pnp. The middle section is known as the "base" and the other two as the "collector" and "emitter". When used as an amplifying element, the base to emitter junction is in a "forward-biased" (conducting) condition, and the base to collector junction is "reverse-biased" or non-conducting. Small changes in the base to emitter current (the input signal) cause either holes (for pnp devices) or free electrons (for npn) to enter the base from the emitter. The attracting voltage of the collector causes the majority of these charges to cross into and be collected by the collector, resulting in amplification. Contrast field effect transistor.
  • blocking capacitor — a capacitor that blocks the passage of direct current but allows alternating current to pass
  • bomb disposal unit — a unit of the police or armed services specializing in bomb disposal
  • burkitt's lymphoma — a cancer characterized by tumors containing lymphoid cells, occurring esp. in children, in the jaw, eyes, and internal organs: it is associated with the Epstein-Barr virus
  • c-reactive protein — a globulin in the blood produced by the liver in response to inflammation
  • calcium propionate — a white, water-soluble powder, CaC 6 H 10 O 4 , used in bakery products to inhibit the growth of fungi.
  • calliper compasses — an instrument for measuring internal or external dimensions, consisting of two steel legs hinged together
  • camp david accords — a peace treaty between Israel and Egypt issuing from talks at Camp David between Egyptian President Sadat, Israeli Prime Minister Begin, and the host, U.S. President Carter: signed in 1979.
  • cap of maintenance — a ceremonial cap or hat worn or carried as a symbol of office, rank, etc
  • cape breton island — an island off SE Canada, in NE Nova Scotia, separated from the mainland by the Strait of Canso: its easternmost point is Cape Breton. Pop: 132 298 (2006). Area: 10 280 sq km (3970 sq miles)
  • capital allowances — the money spent by a company on fixed assets which can be taken off the profits of the company before tax is imposed
  • captain james cook — Frederick Albert, 1865–1940, U.S. physician and polar explorer.
  • cassiopeia's chair — the five brightest stars in the constellation Cassiopeia that seem to form the shape of a W or M
  • castration complex — an unconscious fear of having one's genitals removed, as a punishment for wishing to have sex with a parent
  • central projection — a projection of one plane onto a second plane such that a point on the first plane and its image on the second plane lie on a straight line through a fixed point not on either plane.
  • chagos archipelago — group of islands in the Indian Ocean 1,180 mi (1,899 km) northeast of Mauritius, comprising the British Indian Ocean Territory: chief island, Diego Garcia
  • championship point — a point that would decide the winner of a match that would decide the championship
  • checkpoint charlie — a crossing between East and West Berlin during the Cold War
  • chemical potential — a thermodynamic function of a substance in a system that is the partial differential of the Gibbs function of the system with respect to the number of moles of the substance
  • christmas shopping — shopping especially for Christmas presents, but also for Christmas food and drink, and all the other things required over the Christmas period.
  • chromatic printing — printing from blocks or types inked with various colours
  • chromolithographer — One engaged in chromolithography.
  • chromolithographic — Pertaining to, or made by, chromolithography.
  • chronostratigraphy — The branch of geology concerned with establishing the absolute ages of strata.
  • claustrophobically — In a claustrophobic way.
  • clinical pathology — the branch of pathology dealing with the study of disease and disease processes by means of chemical, microscopic, and serologic examinations.
  • closed corporation — a corporation the stock of which is owned by a small number of persons and is rarely traded on the open market
  • closed scholarship — a scholarship for which only certain people, such as those from a particular school or with a particular surname, are eligible
  • cobalt violet deep — a medium to strong purple color.
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