Loading…
Loading…
Browse key terms and definitions across all GCSE subjects. Search by keyword or filter by subject and exam board.
23,110 key terms
Khandha
One of the five changing aspects of human existence: form, feeling, perception, mental formations and consciousness. Khandha means a ‘heap’ or aggregate; skandha is an alternative spelling.
Khandha Sutta
A Buddhist discourse in which the Buddha identifies the five aggregates and distinguishes them from the five clinging-aggregates.
Khuddakapatha
A collection of short Buddhist texts containing basic teachings and training rules, including the rule to refrain from taking life.
Khums
A one-fifth contribution practised by Shi’a Muslims, shared between charitable purposes and religious leaders.
Khutbah
A sermon delivered as part of the Friday congregational service, reminding Muslims of their faith and duties.
Kibbutz
A type of commune, usually found in Israel, whose members live communally and share resources, valuing equality and community.
Kibibyte
A binary file-size unit equal to 1024 bytes; abbreviated KiB.
Kiddush
A blessing recited over wine or grape juice to sanctify Shabbat or a festival.
Kiddushin
The sanctification or betrothal stage of a Jewish marriage ceremony; the word expresses the idea of making holy.
Kidney
One of two organs that filter blood and produce urine.
Kidney dialysis
A treatment that uses a machine to remove waste substances and excess water from a person's blood when their kidneys cannot do so sufficiently.
Kidney failure
A condition in which the kidneys cannot remove enough urea or regulate water and ion levels effectively.
Kidneys
Organs that filter the blood and regulate water loss by varying how much water is returned to the blood and how much leaves in urine.
Kidney transplant
An operation in which a healthy kidney from a donor is placed in a person whose kidneys have failed.
Kievan Rus
The state ruled by Rus princes from Kiev, also called Kyiv, which developed through the expansion and consolidation of their power.
Killing centre
A facility established primarily for mass murder, including through poison gas.
Kiln seasoning
Drying timber in a heated chamber under controlled conditions.
Kilobyte
A unit of data equal to 1,000 bytes, written kB. The prefix kilo means .
Kilobyte (KB)
A unit of data equal to 1,000 bytes using the decimal convention.
Kilocalorie
A unit of energy, abbreviated to kcal. Food labels commonly use kcal and kilojoules (kJ) to show energy content.
Kilocalorie (kcal)
A unit used to express the energy supplied by food and the energy used by the body, often called a calorie in everyday language.
Kilowatt-hour
The energy transferred by a device operating at a power of one kilowatt for one hour. .
Kilowatt-hour
A unit of energy equal to the energy transferred by a power of 1 kW sustained for 1 hour. .
Kilowatt-hour (kWh)
A unit of energy equal to the energy transferred by a 1 kW appliance operating for one hour.
Kimsila Sutta
A Buddhist discourse on right conduct that stresses careful listening, learning, understanding and practising the Dhamma.
Kin
A relative, such as a parent, sibling, grandparent, aunt or uncle.
Kinaesthetic awareness
Awareness of the position and movement of the body: the ‘feel’ of a movement.
Kinaesthetic sense
The sense of how the body is positioned and moving: the ‘feel’ of a skill.
Kinder, Küche, Kirche
The Nazi slogan meaning children, kitchen and church, expressing their ideal of women concentrating on motherhood, domestic work and traditional family life.
Kindertransport
The organised evacuation of around 10,000 mainly Jewish children to Britain in 1938–39, without their parents.
Create a free account to keep every note you open and track your progress.