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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
Type I fibre
A slow twitch muscle fibre with low force, a slow speed of contraction and high endurance.
Type IIa fibre
A fast twitch muscle fibre with high force, a moderate speed of contraction and medium endurance; it is more resistant to fatigue than type IIx.
Type IIx fibre
A fast twitch muscle fibre with very high force, a fast speed of contraction and low endurance.
Typhoid
A bacterial infection spread through contaminated water or food, causing symptoms including fever and diarrhoea.
Typhoon
The name used for a tropical cyclone in the north-west Pacific Ocean.
Typhus
An infectious disease which spreads through Lowood’s pupils in Chapter 9 and exposes the school’s harmful conditions.
Typicality
The extent to which a historical site shares the characteristic features of other comparable sites.
Typicality
The extent to which a feature or sequence is characteristic of a film’s wider style or of established genre conventions.
Typical offender
A socially produced image of the kind of person thought likely to commit crime, commonly stereotyped as young, male and working-class, and often from an ethnic minority background.
Typical speed
An approximate, representative value used as a benchmark; individual values can be higher or lower.
Typical speed
An approximate speed representative of an everyday activity or situation; individual speeds can be higher or lower.
Typical use
Effectiveness during ordinary use, including mistakes such as missed pills or condoms slipping.
Typical use
Contraceptive effectiveness during everyday use, including mistakes such as missed pills.
Typical-use effectiveness
How well a method prevents pregnancy in real life, including mistakes or failures in use.
Typography
The arrangement of lettering, including its style, size and spacing.
Typography
The style, size and arrangement of lettering in a media product.
Typology
A classification of different types of behaviour or involvement.
Tyrannicide
A person who kills a tyrant. Harmodios and Aristogeiton were commemorated in Athens as the tyrannicides.
Tyranny
Rule in which a ruler exercises power arbitrarily, using fear or coercion and disregarding established restraints on authority.
Tyranny
Cruel or oppressive use of power by a ruler.
Tyrant
A ruler who held power outside the established constitutional arrangements, rather than through ordinary democratic authority.
Tyrant
A ruler who exercises power oppressively or cruelly.
Tza’ar ba’alei chayim
The Jewish principle of preventing unnecessary suffering to animals.
Tzedakah
Charitable giving understood as a duty of righteousness and justice, rather than simply an optional generous act.
Tzedek
Justice or righteousness; a principle requiring fair treatment and protection of vulnerable people.
Tzedekah
A Jewish obligation to pursue justice through giving and supporting people in need; also spelt tzedakah. It is a duty, rather than simply optional generosity.
Tzelem Elohim
The Jewish teaching that human beings are created in the image of God, giving every person sacred worth.
Tzitzit
Fringes attached to the corners of a Jewish prayer shawl or garment, reminding the wearer to obey God’s commandments.
U-boat
A German submarine used to attack enemy shipping.
UHT
Ultra-high-temperature treatment: heating milk to a higher temperature for a shorter time to extend its shelf life.
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