Alaska Standard Time
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio.
a standard time used in the zone which includes all of Alas. except the W Aleutian Islands, corresponding to the mean solar time of the 135th meridian west of Greenwich, England: it is nine hours behind Greenwich time
Used by arrangement with John Wiley & Sons, Inc.
noun Abbr. ASTThe American Heritage® Dictionary of the English Language, 4th edition Copyright © 2010 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Standard time in the ninth time zone west of Greenwich, England, reckoned at 135°W and used throughout Alaska except for the western Aleutian Islands. Also called Alaska Time.