British Thermal Unit is a standard unit of energy that is measured at about 1055 joules. The British Thermal Unit (BTU or Btu) is primarily used in the United States more than in the United Kingdom. This energy unit is the total amount of thermal energy that is required to heat or cool 1 pound of water significantly by 1Â°Fahrenheit.
Bradyphrenia is a neurological term referring to the slowness of thought common to many disorders of the brain.
Sometimes known as nocturnal groaning, catathrenia is a rare sleep disorder which falls under the category of sleep-related breathing disorders. Interestingly, up until 2013 it was classified as a parasomnia rather than a breathing disorder.