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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 said it now has 13 satellites in orbit after launching six spacecraft within 50 days.

From The Wall Street Journal ● Aug. 10, 2026

It has partnerships with more than 60 mobile-network operators that collectively cover more than 3 billion subscribers, AST SpaceMobile said.

From The Wall Street Journal ● Aug. 10, 2026

AST SpaceMobile shares dropped 17% on the news.

From MarketWatch ● Jul. 16, 2026

An apparently successful mission to deploy satellites is validation for AST Spacemobile and SpaceX, which are rivals in the field of space-based communications.

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 Winn Schwartau