Pacific Standard Time
n.
Abbr. PST
Standard time in the eighth time zone west of Greenwich, England, reckoned at 120° west and used, for example, in the Pacific coastal states of the United States. Also called Pacific Time. |
PST
abbr. Pacific Standard Time |
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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The American Heritage® Abbreviations Dictionary, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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[pst] 
