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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
Understitching
Stitching a facing or lining to the seam allowance close to an edge to help keep it inside the garment.
Undersupply
A situation in which the quantity supplied is insufficient to meet demand at the current price.
Undertaker
A landowner granted land in the Ulster plantation in return for undertaking to settle families from England or Scotland on it.
Under-tenant
Someone holding land from a tenant-in-chief rather than directly from the king.
Underworld
An imagined realm of the dead beneath the world of the living.
Underworld
The realm below the earth where the dead dwell, ruled in this passage by a king and queen.
Underwritten character
A character given limited development, complexity or independent importance in a narrative.
Undeserving poor
An Elizabethan label for poor people believed to be able to work but unwilling to do so; it was often applied to wandering beggars.
Undifferentiated cell
A cell that has not yet acquired the structures needed to perform a particular specialised function.
Undifferentiated cell
A cell that has not yet become specialised to perform a particular function.
UNEF
The United Nations Emergency Force, deployed after the Suez Crisis to help separate Egyptian and Israeli forces.
Unemployment
A situation in which someone is looking for work but cannot find a job.
Unemployment
Being without a job while available for and seeking work.
Unemployment
Being without a job while actively seeking work and available to start, or having found a job and being due to start it shortly.
Unemployment insurance
A contributory scheme that provides financial support to insured workers when they lose their jobs.
Unemployment rate
The number of unemployed people as a percentage of those working or looking for work.
Uneven development
Differences in levels of economic development and quality of life between places.
Unfair dismissal
Dismissal that fails to meet legal requirements for a fair reason or fair procedure; entitlement to claim depends on employment status and qualifying rules.
Ungrouped data
Data shown as individual values rather than combined into class intervals.
Ungrouped data
Data presented without combining different values into broader classes or intervals; individual recorded values remain identifiable.
Unhatched rapier
A rapier is a narrow sword. In Toby’s description of Andrew in Act 3 Scene 4, “unhatched rapier” suggests a sword that has not been used in combat.
UNIA
The Universal Negro Improvement Association, led by Marcus Garvey, which promoted Black pride, independence and a ‘Back to Africa’ movement.
Unicode
A character standard that assigns numerical codes to characters from many writing systems, retaining ASCII's assignments from 0 to 127.
Uniform acceleration
Acceleration that remains constant, represented by a straight sloping line on a velocity–time graph.
Uniform acceleration
Constant acceleration: velocity changes by equal amounts in equal time intervals.
Uniform circular motion
Motion along a circular path at constant speed.
Uniform density
An approximation in which density is taken to have the same value everywhere in the region being considered.
Uniform electric field
A field with the same strength and direction at every point in the region considered.
Uniformity
The requirement that people follow the same authorised religious practices and church rules.
Uniform magnetic field
A field that has the same strength and direction throughout a region.
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