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

Through Tuesday trading, AST shares have skyrocketed more than 4,000% over the past two years.

From Barron's • Apr. 15, 2026

William Blair analyst Louie DiPalma said in a recent note to clients that both SpaceX and AST SpaceMobile will likely look to acquire more spectrum to add capacity to their networks, according to Barron’s.

From MarketWatch • Apr. 14, 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