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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

See Examples For:

AST

AST SpaceMobile also pushed back a satellite-launch target.

From The Wall Street Journal ● Jul. 20, 2026

As of June 30, AST SpaceMobile said it had about $2.7 billion in cash and cash equivalents.

From MarketWatch ● Jul. 16, 2026

Amid the post-IPO excitement, Ottaway took a trip to Florida last week to watch SpaceX’s Falcon 9 rocket launch three AST SpaceMobile BlueBird satellites into orbit.

From MarketWatch ● Jun. 23, 2026

The Wednesday launch of three satellites brings AST SpaceMobile’s total satellites into orbit to nine.

From Barron's ● Jun. 17, 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