- See under standard time.
Origin of Pacific time
An Americanism dating back to 1880–85
Also called Pacific Standard Time.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Pacific Standard Time
- one of the standard times used in North America, based on the local time of the 120° meridian, eight hours behind Greenwich Mean TimeAbbreviation: PST