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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
Son
The second Person of the Trinity, Jesus Christ, whom Christians believe is God incarnate and the saviour of humanity.
Sonar
A method of using reflected sound pulses to locate an underwater object or measure water depth.
Sonnet
A fourteen-line poetic form, usually with a patterned rhyme scheme and a development or turn in its ideas.
Son of David
A title identifying Jesus with the promised descendant of King David and expressing belief that he is the Messiah.
Son of God
A title for Jesus expressing his divine nature and relationship with God the Father; Christians believe he is God the Son.
Son of Man
A title Jesus uses for himself; in Mark 8:38, it identifies him as the one who will come in his Father’s glory with the holy angels.
Sons of Liberty
Colonial protest groups that opposed British policies and helped organise resistance, including calls for boycotts.
Sooner
A person who entered land before the authorised starting time of an Oklahoma land run to gain an unfair advantage in claiming it.
Soot
A solid particle of carbon produced during incomplete combustion of a carbon-containing fuel.
Soot
Tiny solid carbon particles produced during incomplete combustion of carbon-containing fuels.
Soothsayer
A person believed to be able to predict the future, sometimes consulted for protection against illness or misfortune.
Soothsayer
A person believed to be able to predict future events.
Sophist
A professional teacher in ancient Greece, often associated with teaching argument and persuasive speaking.
Sophists
Professional teachers in fifth-century BC Greece who charged fees for education, often including persuasive speaking and argument.
Sortie
A sudden attack made by defenders who leave a besieged place to strike the surrounding enemy.
Sorting algorithm
A precise sequence of steps for arranging data in a chosen order, such as numbers from smallest to largest.
Soul
An inner spiritual or moral self. In Never Let Me Go, debate about whether clones have souls concerns whether society recognises their full humanity.
Soul
The non-physical or spiritual aspect of a person, which many Christians believe continues to exist after physical death.
Soul-making
The development of a person’s moral and spiritual character through responding to challenges and difficulties.
Sound bridge
Sound that continues across a change of shot or scene, connecting different images or moments.
Sound effect
A sound used to represent or emphasise an event or action, such as a door slam or an explosion.
Sound wave
A travelling pattern of pressure variations caused by vibrations in a material such as air.
Source
The starting point of a river.
Source
A part of a plant from which sucrose is transported, such as a photosynthesising leaf or a storage organ releasing sugar.
Source
An object or process that emits an electromagnetic wave.
Source
A part of a plant that supplies sugars to the phloem, such as a photosynthesising leaf.
Source acknowledgement
Identifying where information or data came from so that its origin can be checked and its creator receives credit.
Source area
An ocean region in which tropical cyclones develop, rather than simply an area they later affect.
Source-based response
An essay that uses a printed extract together with knowledge of the whole studied text to answer one question.
Source charge
A charged object that produces an electric field around itself.
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