See under standard time.
Origin of Central time
An Americanism dating back to 1880–85
Also called Central Standard Time.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
British Dictionary definitions for central standard time
Central Standard Time
one of the standard times used in North America, based on the local time of the 90° meridian, six hours behind Greenwich Mean Time
one of the standard times used in Australia
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012