or A.S.T., a.s.t.


Atlantic Standard Time.See under standard time.


a suffix of nouns that denote a person who practices or is concerned with something, or holds certain principles, doctrines, etc.: enthusiast;ecdysiast; gymnast.

Origin of -ast

a variant of -ist after the vowel i; from Greek -astēs Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for ast

Contemporary Examples of ast

Historical Examples of ast

  • And I believe ef you was to ast 'em they'd all tell you the same, suh.

    From Place to Place

    Irvin S. Cobb

  • Ye've ast us t' b'lieve a genuwine out 'n out impossibility.'

    Eben Holden

    Irving Bacheller

  • I want to ast you to pray, not that he may be converted, but that he may be converted this very night.

  • I'd be afraid to ast her, for fear she'd spot me or accuse me, whichever way it was.

    The Man Next Door

    Emerson Hough

  • One of them ast me if I knew anything about the alleged elopement.

    The Man Next Door

    Emerson Hough

British Dictionary definitions for ast


abbreviation for

Atlantic Standard Time
automated screen trading (in securities)
British education advanced skills teacher
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

Word Origin and History for ast


agential suffix, cognate with -ist, from French -ast, from Latin -asta, from Greek -astes.

Online Etymology Dictionary, © 2010 Douglas Harper

ast in Medicine



aspartate aminotransferase
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.