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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
Fictional autobiography
A life story presented as though an invented character has written an account of their own experiences.
Fidei Defensor
A title meaning ‘Defender of the Faith’, awarded to Henry VIII by Pope Leo X in 1521 for defending Catholic teaching against Lutheranism.
Fidelity
Faithfulness to a person or promise; in marriage, this includes keeping the commitments made to a spouse.
Fidelity
Remaining loyal to a partner and keeping the commitments of the relationship, including sexual faithfulness.
Fiducial marker
A pointer attached to a moving object to make its position easier to read against a scale.
Fidyah
Providing food for a person in need, or money for that food, in place of fasting where a valid exemption applies and the person cannot make up the fast.
Fief
An estate held from a lord in return for services or other obligations.
Field
A region in which an object can experience a force without touching the source of that force.
Field
A region in which an object experiences a force because of its mass, electric charge or magnetic properties.
Field
A named column in a database table that holds one category of data, such as a user's age.
Field ambulance
A mobile RAMC medical unit that treated casualties and established dressing stations; it was not an ambulance vehicle.
Field experiment
An experiment conducted in an everyday setting where the researcher deliberately changes a variable.
Field experiment
An experiment carried out in a natural setting in which researchers manipulate an independent variable and measure its effect on a dependent variable.
Field margin
A strip at the edge of an agricultural field that is left less intensively managed to provide habitat for organisms.
Field margin
A strip at the edge of a crop field where plants such as wild flowers and grasses are allowed to grow.
Field name
A descriptive label identifying what a field contains, such as FirstName or TestScore.
Field of view
The circular area visible through a microscope at one time.
Field of view
The area of the specimen visible through a microscope at one time.
Field sketch
A drawing made from direct observation that selects and records the main geographical features of a landscape.
Fieldwork
Investigating geography through first-hand observations and data collection in the environment being studied.
Fieldwork enquiry
An investigation of a geographical question using evidence collected in a real location outside the classroom.
Fight-or-flight response
The body's rapid set of responses to a threatening or stressful situation, preparing it for vigorous action or escape.
Fight or flight response
The body's preparation to respond to a threat by confronting it or escaping, including an increased heart rate and greater delivery of oxygen and glucose.
Fight or flight response
An automatic bodily response to a perceived threat that prepares a person to confront the danger or escape from it.
Figure-ground perception
The organisation of a visual scene into a main object, the figure, and its background, the ground.
Figurehead
A person around whom supporters unite; Mary served this role for opponents who wanted a Catholic monarch.
Figure-of-eight shield
A shield with two rounded sections and a narrowed middle, giving it an outline resembling the number eight.
Figurine
A small representation of a human or animal.
Filament
A thin wire inside a filament lamp that becomes hot enough to emit light when current passes through it.
Filament
A long, continuous fibre that can be used to make yarn.
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