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• AST
  AST

  Atlantic Standard Time. standard time
• -ast
  -ast

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

AST

¹ American  

Or A.S.T.,

1. Atlantic Standard Time. standard time

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-ast ² American  

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

   enthusiast;

   ecdysiast;

   gymnast.

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AST British  

abbreviation

1. Atlantic Standard Time

2. automated screen trading (in securities)

3. education advanced skills teacher

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Etymology

Origin of -ast

A variant of -ist ( def. ) after the vowel i ; from Greek -astēs

Example Sentences

Others, like communications-satellite operators including AST Spacemobile, Viasat and Iridium, have more tangible growth prospects but also are in an increasingly crowded field.

From The Wall Street Journal • Jun. 5, 2026

AST shares, at about $107, are still down about $26.

From Barron's • Jun. 5, 2026

That may not be all bad news for smaller incumbents like AST, Viasat and Iridium.

From The Wall Street Journal • Jun. 5, 2026

In addition to AST, several other space stocks fell in the wake of the Blue Origin incident.

From MarketWatch • Jun. 2, 2026

His other computer, an AST 386SX with 330 MB of storage was the one his recruits called with reports.

From Terminal Compromise: computer terrorism: when privacy and freedom are the victims: a novel by Schwartau, Winn