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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
Iberia
The peninsula containing modern Spain and Portugal, where Carthage developed territories and military resources before the Second Punic War.
Iblis
The jinn who arrogantly refused Allah’s command to prostrate before Adam; also called Satan or Shaytan.
Ibrahim
A prophet whose willingness to sacrifice his son is remembered at Id-ul-Adha.
ICBM
An intercontinental ballistic missile: a long-range missile capable of carrying nuclear warheads between continents.
ICD
The International Classification of Diseases: the World Health Organization’s system for classifying health conditions, including mental disorders.
Ice
Applying a wrapped cold pack to an injured area to help reduce pain and swelling.
Ice core
A cylinder of ice drilled from an ice sheet, containing a sequence of ice layers and trapped ancient air.
Ichthus
A fish-shaped Christian symbol expressing the statement ‘Jesus Christ, God’s Son, Saviour’.
Ichthys
A fish symbol whose Greek name supplies the initials of the confession ‘Jesus Christ, God’s Son, Saviour’.
Icon
A sacred image of Christ, a saint or a religious event, used to express Christian belief and support prayer and devotion.
Icon
A recognisable cultural or social representation with lasting significance or influence.
Iconoclasm
The deliberate destruction or removal of religious images.
Iconoclast
A person who opposes the religious use of sacred images; historically, Christian iconoclasts sought to remove icons from church life.
Iconography
The images and symbols used on an object to communicate identities, beliefs or claims.
Iconography
The objects, symbols and other visual features used to represent and identify a figure in art.
Iconography
Religious images and the symbols used within them to express beliefs.
Iconography
Recognisable images, objects or symbols associated with a particular theme or genre, such as raised fists in protest imagery.
Iconography
Recognisable visual signs associated with a genre, including characteristic objects, costumes and settings.
Iconostasis
A screen or stand bearing icons in an Orthodox church, positioned between the congregation and the altar area.
ICT
Information and communication technology: systems used to store, process and exchange information, including computers and mobile networks.
ICT
Information and communication technology: the computers, networks and software used to store information and communicate.
Iddah
The waiting period a Muslim woman observes after divorce before she can remarry. It helps establish whether she is pregnant and can allow time for reconciliation.
Iddhi
Supernormal powers described in Buddhist tradition, often associated with advanced meditation, such as walking on water or passing through solid objects.
-ide
An ending commonly used for a compound containing two elements, such as sodium chloride or magnesium oxide.
Idea
A thought or message communicated by a text, such as the idea that providing shelter does not necessarily mean treating people humanely.
Idealisation
Presenting someone with enhanced or perfect qualities rather than necessarily showing their ordinary appearance or behaviour.
Idealisation
Presenting someone as especially admirable or perfect, often because affection influences the observer’s judgement.
Idealisation
A representation that emphasises desirable qualities or presents people and events as better, more orderly or more successful than reality necessarily was.
Idealisation
Presenting something as better or more harmonious than it is, while overlooking its problems.
Idealised portrayal
A portrayal that emphasises how people or institutions ought to behave rather than recording the full variety of actual experiences.
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