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

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

Satellite maker Sidus Space gained nearly 19% and shares of AST SpaceMobile rose by 10%.

From BBC • Mar. 25, 2026

What’s more, those are NASA’s plans, and they don’t include military space business or private enterprise, including the communications and imaging networks being built out by SpaceX, AST SpaceMobile, Amazon.com, Planet Labs, and others.

From Barron's • Mar. 25, 2026

AST SpaceMobile is racing to get enough satellites into space in order to deliver 5G-quality voice, data, and video coverage to cellphones anywhere in the world.

From Barron's • Mar. 4, 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