Definition of British Standard Time in English:

British Standard Time

noun

  • 1Greenwich Mean Time (now disused).

  • 2The standard time used experimentally in the United Kingdom from 18 Feb. 1968 to 31 Oct. 1971, one hour in advance of GMT (UTC), equivalent to Central European Time and British Summer Time but in force throughout the year; abbreviated BST.

Origin

Early 20th century; earliest use found in The Times.