20-letter words containing io
- capitation allowance — an amount of money given to a school based on the number of students it has
- carbon sequestration — the prevention of greenhouse gas build-up in the earth's atmosphere by methods such as planting trees to absorb carbon dioxide or pumping carbon dioxide into underground reservoirs
- celestial navigation — navigation by observation of the positions of the stars
- cellular respiration — the oxidation of organic compounds that occurs within cells, producing energy for cellular processes.
- center of percussion — the point on a rigid body, suspended so as to be able to move freely about a fixed axis, at which the body may be struck without changing the position of the axis.
- change a reservation — If you change a reservation, you move a booking to a different date because someone who has booked a room has informed you that they wish to stay there on a different date.
- chromatic aberration — a defect in a lens system in which different wavelengths of light are focused at different distances because they are refracted through different angles. It produces a blurred image with coloured fringes
- chromatic adaptation — the alteration by photosynthesizing organisms of the proportions of their photosynthetic pigments in response to the intensity and colour of the available light, as shown by algae in the littoral zone, which change from green to red as the zone is descended
- chronic inflammation — persistent infection or swelling
- church commissioners — a group of representatives of Church and State that administers the endowments and property of the Church of England
- coalition government — a government containing members of two or more political parties
- college of education — a professional training college for teachers
- colloidal suspension — a mixture having particles of one component, with diameters between 10 −7 and 10 −9 metres, suspended in a continuous phase of another component. The mixture has properties between those of a solution and a fine suspension
- combination sandwich — a big sandwich with a mixed filling
- commissioned officer — a military officer holding a commission, such as Second Lieutenant in the British Army, Acting Sub-Lieutenant in the Royal Navy, Pilot Officer in the Royal Air Force, and officers of all ranks senior to these
- commissioning editor — a person who commissions authors to write books and magazine articles
- communication skills — the ability to convey information and ideas effectively
- communication system — (communications) A system or facility for transfering data between persons and equipment. The system usually consists of a collection of individual communication networks, transmission systems, relay stations, tributary stations and terminal equipment capable of interconnection and interoperation so as to form an integrated whole. These individual components must serve a common purpose, be technically compatible, employ common procedures, respond to some form of control and generally operate in unison.
- communication theory — information theory.
- comparative religion — a field of study seeking to derive general principles from a comparison and classification of the growth and influence of various religions.
- compartmentalisation — Alternative form of compartmentalization.
- compartmentalization — to divide into categories or compartments.
- compensation culture — a culture in which people are very ready to go to law over even relatively minor incidents in the hope of gaining compensation
- compensation package — the sum of compensation awarded in a legal case
- complete unification — (programming) W.P. Weijland's name for unification without occur check.
- compression ignition — ignition of engine fuel by the heat of air compressed in the cylinders into which the fuel is introduced.
- computing dictionary — Free On-line Dictionary of Computing
- condensation nucleus — nucleus (def 5).
- conditioned response — a response that is transferred from the second to the first of a pair of stimuli. A well-known Pavlovian example is salivation by a dog when it hears a bell ring, because food has always been presented when the bell has been rung previously
- conditioned stimulus — a stimulus to which an organism has learned to make a response by classical conditioning
- conductive education — an educational system, developed in Hungary by András Petö, in which teachers (conductors) teach children and adults with motor disorders to function independently, by guiding them to attain their own goals in their own way
- confectioners' sugar — Confectioners' sugar is very fine white sugar that is used for making icing and candy.
- conformal projection — a map projection in which angles formed by lines are preserved: a map made using this projection preserves the shape of any small area.
- congressional record — (in the US) the government journal that publishes all proceedings of Congress
- conscious uncoupling — the ending of a romantic relationship or marriage in a respectful, positive, and constructive way.
- conservation of mass — the principle that the total mass of any isolated system is constant and is independent of any chemical and physical changes taking place within the system
- construction company — a business enterprise concerned with the construction of buildings, bridges, etc
- context of situation — the totality of extralinguistic features having relevance to a communicative act.
- continued proportion — geometric progression
- continuing education — Continuing education is education for adults in a variety of subjects, most of which are practical, not academic.
- continuing-education — adult education.
- continuous variation — variation in phenotypic traits such as body weight or height in which a series of types are distributed on a continuum rather than grouped into discrete categories. Compare discontinuous variation.
- controlled explosion — the deliberate detonation of an explosive device under strictly controlled circumstances
- conventional weapons — weapons which are not nuclear
- convergent evolution — the evolutionary development of a superficial resemblance between unrelated animals that occupy a similar environment, as in the evolution of wings in birds and bats
- conversation stopper — a comment that is so shocking or boring that people stop talking
- coordination complex — one of a number of complex compounds in which an atom or group of atoms is bound to the central atom by a shared pair of electrons supplied by the coordinated group and not by the central atom
- correctional officer — a prison guard
- corruption of minors — the criminal offence of inducing people below the age of consent to engage in sexual activity
- council of the union — the legislature of the former Soviet Union and its successor states, consisting of an upper house (Soviet of the Union or Council of the Union) whose delegates are elected on the basis of population, and a lower house (Soviet of Nationalities or Council of Nationalities) whose delegates are elected to represent the various nationalities.