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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
Non-communicable disease
A disease that cannot be passed from one individual to another.
Non-conformist
A Protestant Christian belonging to a church outside the established Church of England.
Nonconformist
A Protestant who did not conform to the worship or organisation of the established Church of England.
Non-conformity
Refusal to follow expected behaviour or cultural standards; under Nazism, this did not necessarily involve an organised attempt to overthrow the regime.
Non-contact force
A force that acts between objects without them touching.
Non-contact force
A force that acts between objects without them needing to touch, such as magnetic attraction or repulsion.
Non-contact interaction
An interaction that can occur when the objects are separated, through a field.
Non-contributory benefit
A benefit for which recipients do not have to make prior payments into an insurance or pension fund.
Non-custodial sentence
A punishment served outside prison, often involving supervision, unpaid work or restrictions.
Non-custodial sentence
A punishment that does not involve serving a term of imprisonment, such as a fine or community sentence.
Non-democratic system
A political system in which citizens cannot freely choose and replace those holding power through genuinely competitive elections.
Non-diegetic sound
Sound whose source is outside the story world and which is supplied for the audience, such as an accompanying musical score.
Non-diegetic sound
Sound whose source is outside the film’s story world, such as an added musical score.
Non-dualism
An understanding that the true self and Brahman are ultimately one, rather than two separate realities.
Non-embedded system
A general-purpose computer system designed to perform many different tasks by running different applications, rather than being built into another device for a dedicated function.
Non-enclosed system
A system from which matter, including a gas, can enter or leave during a reaction.
Non-enclosed system
A system in which matter can enter or leave, such as a reaction taking place in an open container.
Non-essential amino acid
An amino acid that the body can make, so it does not have to be supplied by food.
Non-ferrous metal
A metal that is not iron, such as copper.
Non-ferrous metal
A metal other than iron, such as copper or tin.
Non-ferrous metal
A metal that does not contain iron. Examples include aluminium, copper, tin and zinc.
Non-fiction
Writing about real people, experiences, events or ideas. It can include opinions and selective presentation as well as factual information.
Non-fiction
Writing intended to explain real events, experiences or ideas rather than tell an invented story.
Non-financial method of motivation
A way of encouraging employees’ effort and commitment without directly rewarding them with money.
Non-financial objective
A business target whose main purpose is not financial gain, such as personal satisfaction or helping others.
Non-finite resource
A material or energy source that remains available because it is continuously supplied or replenished quickly enough to match consumption.
Non-flammable
A gas that does not burn.
Non-flammable
Unable to burn.
Non-governmental organisation
An organisation independent of government that works on issues such as humanitarian relief, development or human rights.
Non-governmental organisation (NGO)
An organisation independent of government, often carrying out charitable or development work.
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