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

An AST SpaceMobile satellite being carried by a Blue Origin rocket was put into an incorrect position on Sunday and it will now have to be taken out of orbit.

From Barron's • Apr. 20, 2026

AST SpaceMobile shares were falling on Monday morning after a satellite launched by Blue Origin was seen as a failure, which could be a setback for the company’s plans to offer satellite-internet services.

From MarketWatch • Apr. 20, 2026

This incident is a setback for AST SpaceMobile’s goal of 45 satellites by late 2026, aiming for commercial service this year.

From Barron's • Apr. 20, 2026

AST SpaceMobile shares dropped 11.1% in recent morning trading.

From MarketWatch • Apr. 20, 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