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Browse key terms and definitions across all GCSE subjects. Search by keyword or filter by subject and exam board.
23,110 key terms
Coronary bypass surgery
An operation that creates an alternative route for blood around a blocked coronary artery.
Coronary heart disease
A disease in which fatty material builds up inside the coronary arteries, narrowing them and reducing blood flow to the heart muscle.
Coronary heart disease
A disease in which layers of fatty material build up inside the coronary arteries, narrowing them and reducing the supply of oxygen to the heart muscle.
Coronary heart disease
A disease in which the arteries supplying the heart muscle become narrowed, reducing its blood supply.
Coronary heart disease
A condition in which fatty deposits narrow or block the coronary arteries, reducing the blood supply to the heart muscle.
Coronary heart disease (CHD)
Disease involving narrowing or blockage of the arteries supplying the heart muscle, reducing its blood supply.
Coronary heart disease (CHD)
A cardiovascular condition in which fatty deposits narrow or block the coronary arteries that supply the heart muscle with blood.
Coronation
The ceremony in which a monarch swears an oath, is anointed with holy oil, receives the regalia and is crowned.
Coroner
An official who investigates the cause and circumstances of certain deaths, including suspicious or violent deaths.
Corporal punishment
Punishment that deliberately inflicts physical pain or injury, such as whipping or branding.
Corporal punishment
Punishment that deliberately inflicts physical pain on an offender, such as whipping.
Corporate crime
Crime committed by employees on behalf of their company, such as illegally producing and selling unsafe products.
Corporate crime
Crime committed by a company, or by people acting on its behalf, such as illegal pollution.
Corporation
A large company legally organised as a single business, which may own or control many factories and other operations.
Corporation tax
A tax on a company’s profits.
Corporation tax
A tax paid by companies on their profits.
Corporeal vision
A vision experienced as seeing a figure, such as an angel appearing in human form, while awake.
Corpus luteum
The structure formed from the empty follicle after ovulation; it produces progesterone.
Corpus luteum
The structure formed from the follicle left in an ovary after ovulation; it produces progesterone.
Corpus separatum
A Latin expression meaning a separate entity. The UN partition plan proposed this status for Jerusalem and its surrounding religiously significant area.
Correctness
A program’s ability to produce the intended results for valid inputs.
Correlation
An association between two variables: positive when they tend to increase together, and negative when one tends to decrease as the other increases.
Correlation
A relationship in which changes in one variable are associated with changes in another variable.
Correlation
A relationship in which two measured variables change together; it does not, by itself, show that one causes the other.
Correlation
A relationship in which two measured variables tend to change together.
Correlation
A relationship between two variables in which changes in one are associated with changes in the other. It does not, by itself, establish that one causes the other.
Correlation
A tendency for two variables to change together.
Correlation
A pattern of association between two variables, in which their values tend to vary together.
Correlation
An association between two variables; it does not by itself show that one causes the other.
Correlation
A pattern of association between two quantities: positive when they tend to increase together, or negative when one tends to decrease as the other increases.
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