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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
Insufficient communication
Too little communication, leaving people without the information they need.
Insula
A Roman apartment building containing several dwellings, often with shops at street level. The plural is insulae.
Insulation
Material placed around an object to reduce energy transfer between the object and its surroundings.
Insulation
The ability of a material to reduce heat transfer.
Insulator
A material through which charge cannot move freely, so transferred electrons can remain in place.
Insulator
A material through which electric charge cannot flow freely.
Insulin
A hormone released by the pancreas when blood glucose is too high; it promotes glucose uptake by cells and storage of excess glucose as glycogen.
Insulin
A hormone released by the pancreas that lowers blood glucose concentration by causing glucose uptake by cells and storage of excess glucose as glycogen.
Insulin
A hormone produced by the pancreas that helps control blood glucose by enabling glucose to enter body cells.
Insulin pump
A small device attached to the body that delivers insulin.
Insulin resistance
A condition in which body cells do not respond normally to insulin.
Insulin resistance
Reduced responsiveness of body cells to insulin.
Insurance
Financial protection that can provide a payout for covered losses, helping people repair or replace damaged property.
Insurgency
An armed rebellion against an established government or occupying force. In Iraq, different groups attacked Coalition troops, Iraqi authorities and civilians after the 2003 invasion.
Insurrection
An uprising against the established authorities. Mark places Barabbas among rebels involved in an uprising in which murder had been committed.
Intangible reward
A non-physical reward, such as praise, feedback or applause from other people.
Integer
A whole number, including zero and negative whole numbers, such as , or .
Integer
A whole number with no fractional part, such as 0, 3 or −2.
Integer division
An operation that returns the integer quotient of a division. For example, 11 DIV 2 gives 5.
Integrated circuit
A complete electronic circuit formed on a small semiconductor chip and enclosed in a package with electrical connections.
Integrated circuit (IC)
An electronic circuit containing many components formed together on a small semiconductor chip.
Integrated coastal zone management
An approach that coordinates coastal management across places, activities and stakeholder interests rather than considering each separately.
Integrated Coastal Zone Management (ICZM)
An approach that coordinates management of the wider coastal system, balancing human, physical and ecological needs and involving different stakeholders.
Integrated comparison
An explanation that connects two texts throughout a discussion, bringing together their ideas, evidence and methods rather than examining each text separately.
Integrated conjugal roles
Responsibilities shared between partners, alongside more shared interests and leisure activities; also called joint conjugal roles.
Integrated Development Environment (IDE)
Software that brings together tools for writing, translating, running and debugging programs within one application.
Integrated marketing mix
A combination of product, price, place and promotion decisions that support one another and suit the business’s target market and objectives.
Integrated musical
A musical in which songs and dances develop characters, emotions or the story rather than simply providing separate entertainment.
Integrated process
A sequence of production stages whose outputs supply materials for other stages.
Integrated transport system
A transport network that connects different forms of transport so passengers can transfer between them and complete journeys more easily.
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