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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
Output
The number of goods or services a business produces in a given period.
Output
Data or information sent from a program to an output device, such as text displayed on a screen.
Output
The stage in which information is sent to the muscles so that they carry out the chosen response.
Output
A signal or action produced by a control system, such as switching an LED on.
Output
The use of retrieved information, such as giving an answer or performing an action.
Output area
A small statistical geographical area used to publish census results. Output areas can be combined to produce statistics for a larger area.
Output device
A component that produces a physical response, such as sound or light, when controlled by an electronic system.
Output potential difference
The potential difference measured between two selected points in a sensing circuit.
Outreach
Practical work that reaches beyond a congregation to help and serve others.
Outreach work
Practical work through which a church reaches beyond its congregation to help and serve others.
Outremer
The collective name for the Crusader states established in the eastern Mediterranean during and after the First Crusade; the French word means ‘overseas’.
Outsourcing
Hiring an external organisation to carry out tasks or services rather than doing them within the business. Overseas outsourcing uses a provider in another country.
Outsourcing
Paying an external business to carry out work that could otherwise be performed within the business.
Outwash
Sediment transported and deposited by glacial meltwater, usually sorted into layers.
Ovary
A female reproductive organ that produces eggs and oestrogen.
Ovation
A Roman victory ceremony of lower status than a full triumph.
Over-abstraction
Taking water from a river or underground store faster than it can be replenished.
Overall energy change
The difference between the energy levels of the products and the reactants.
Overall energy change
The difference between the total energy needed to break reactant bonds and the total energy released when product bonds form.
Overall heat energy change
The net result of the energy required to break bonds in the reactants and the energy released when bonds form in the products.
Over-arousal
A state in which a performer's arousal is above the level needed for their best performance.
Overbar
A horizontal line above a Boolean input or expression, indicating that NOT applies to everything beneath the line.
Over-cultivation
Growing crops so intensively or repeatedly that soil nutrients are depleted and the land cannot recover.
Overdraft
An arrangement allowing a business to spend more money than it has in its bank account, up to an agreed limit.
Overestimate
An estimate greater than the exact value.
Over-exploitation
Using a natural resource faster than it can recover, causing long-term damage or depletion.
Overexploitation
The use or removal of a natural resource faster than it can be replaced.
Overfat
Having a higher proportion of body fat than is healthy.
Overfishing
Catching fish faster than their populations can replace themselves through reproduction.
Overfishing
Catching fish faster than their population can replace them through reproduction.
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