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

High valuations, like AST SpaceMobile’s $35 billion, reflect a significant market for space-based communications.

From Barron's • Apr. 15, 2026

New Glenn could launch again as soon as Friday, a flight set to carry a satellite developed by Texas-based AST SpaceMobile, which would help Blue Origin chip away at a yearslong backlog of orders.

From The Wall Street Journal • Apr. 15, 2026

Amazon.com, AST SpaceMobile, Planet Labs, and BlackSky Technology are four service providers using space for new business models.

From Barron's • Apr. 13, 2026

On one hand, SpaceX’s IPO could bring more attention to the space trade, boosting trading activity and volatility for companies like AST SpaceMobile as investors seek “sympathy” trades, Mazza told MarketWatch via email.

From MarketWatch • Apr. 8, 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