Loading…
Loading…
Browse key terms and definitions across all GCSE subjects. Search by keyword or filter by subject and exam board.
23,110 key terms
Recycling
Processing waste materials so that they can be used to make new products.
Recycling
The processing of waste materials so that they can be used again as resources.
Recycling
Processing a used material so that it can be made into a new product.
Recycling
Processing waste materials so that they can be used again rather than discarded.
Recycling
Processing waste materials so that they can be used to make new products.
Recycling
Processing waste to recover materials that can be used to make new products.
Recycling
Processing waste material into material that can be used to make new products.
Red and expert
Deng’s description of people who combined loyalty to socialism with specialist knowledge and professional competence.
Red Army
The armed forces organised by the Bolsheviks to defend their government during the Russian Civil War.
Red blood cell
A biconcave blood cell containing haemoglobin and specialised to transport oxygen.
Red blood cell
A specialised cell that transports oxygen using haemoglobin.
Red blood cell
A blood cell containing haemoglobin that transports oxygen around the body.
Red blood cell count
The number of red blood cells in the blood. Red blood cells carry oxygen.
Red blood cell (erythrocyte)
A blood cell that transports oxygen using haemoglobin.
REDD
Reducing Emissions from Deforestation and Forest Degradation: a UN strategy that uses financial incentives to encourage forest protection and reduce emissions from forest loss and damage.
Redemption
Admission to a town or city’s formal freedom by purchase rather than through apprenticeship.
Redemption
Moral or spiritual recovery from wrongdoing; in a Christian reading, deliverance from sin.
Redemption
Deliverance from suffering or oppression; in beliefs about the Messianic Age, the hoped-for transformation towards peace and justice.
Redemption payments
Payments former Russian serfs were required to make to the state for land allocated after emancipation in 1861.
Redemptive efficacy
The effectiveness of Jesus’ saving work in freeing humanity from sin and opening communion with God.
Redevelopment
Improvement of the physical environment, for example by clearing old buildings and constructing new housing or business premises.
Red-figure
A pottery technique in which figures retain the reddish colour of the clay against a black background, allowing details to be drawn within the figures.
Red-figure
A pottery-painting technique in which figures retain the reddish colour of the clay against a dark background.
Red giant
An expanded star formed after a Sun-sized star runs low on hydrogen in its core.
Red Guards
Armed workers who supported the revolution and provided an important part of the force used in the Bolshevik takeover of Petrograd.
Red herring
A misleading clue that directs attention away from the real explanation. The apparent connection between Grace Poole and the laughter distracts Jane from Bertha’s existence.
Redistribution
Moving parliamentary seats between constituencies so that representation better reflects where people live.
Redistribution
The collection of goods by a central authority and their subsequent allocation to other people or uses.
Redlining
A discriminatory lending practice in which banks denied mortgages or other loans in particular neighbourhoods, often because of their racial composition.
Red litmus paper
Indicator paper that turns blue under alkaline conditions.
Create a free account to keep every note you open and track your progress.