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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
Dual burden
The combined responsibility for paid employment and unpaid domestic work.
Dual career family
A family in which both partners pursue careers.
Dual circulatory system
A circulatory system with two circuits, one between the heart and lungs and another between the heart and the rest of the body. Blood passes through the heart twice during one complete circulation.
Dual Control
The division of authority in 1917 between the Provisional Government and the Petrograd Soviet, also called dual power.
Dual heritage
An identity shaped by two cultural or ancestral backgrounds.
Dualism
The belief that a human being has both a physical body and a distinct soul.
Duality
The coexistence of two contrasting aspects within something; in the novella, human nature contains both good and evil.
Dual nature
Jesus Christ’s two natures, divine and human, united in one person without being mixed or divided.
Dual power
The sharing of authority in 1917 between the Provisional Government and the Petrograd Soviet, which commanded considerable support among workers and soldiers.
Dubbing
Recording speech or singing to replace or supply a voice on a film’s soundtrack. A performer’s visible movements are matched to the recorded voice.
Dub poetry
Performance poetry of Jamaican origin with rhythms associated with reggae, often addressing politics and social injustice.
Ducat
A gold coin used as money in Venice.
Duchy
A territory governed by a duke or duchess. Normandy was a duchy held by the kings of England during Richard I’s reign and the beginning of John’s reign.
Ductile
Able to be drawn out into a wire.
Ductile
Able to be drawn into a wire.
Ductility
The ability of a material to be drawn out into wire without breaking.
Duel
An arranged fight between two people, often used to settle a dispute or defend reputation.
Due process
The use of proper legal procedures when the state takes action against someone.
Duke of Parma
Alexander Farnese, Philip II's nephew, who commanded Spain's army in the Netherlands against the Dutch rebels and whose troops were to invade England with the Armada in 1588.
Dukkha
Suffering or unsatisfactoriness, including pain, the loss of temporary pleasures and the inability of changing experiences to provide lasting satisfaction.
Dukkha-dukkha
Ordinary physical or mental suffering, such as illness, injury or grief.
Duma
The Russian parliament established following the 1905 Revolution.
Dune regeneration
Restoring or stabilising sand dunes, for example through planting vegetation and controlling access.
Dune slack
A low-lying hollow between sand dunes, often containing wetter conditions than the surrounding ridges.
Duologue
A scene or exchange involving two speaking characters. A scene involving two characters can nevertheless become effectively a monologue if only one speaks.
Dupatta
A long scarf worn around the head or shoulders as part of South Asian dress; Malala identifies hers with her Pashtun cultural heritage.
Duplex board
Board formed from two layers bonded together, often with a white outer surface suitable for printing.
Duplicity
Deceitfulness through maintaining different appearances or ways of life, concealing one from others.
Durability
The ability of a product to last for its expected useful life.
Durability
How well a storage device or medium withstands physical damage, such as knocks, drops or scratches.
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