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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

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

AST SpaceMobile is down 11% since Thursday’s close.

From Barron's • Jun. 17, 2026

AST SpaceMobile shares were rising 3.3%, while SpaceX was falling 2.9% in early trading.

From Barron's • Jun. 17, 2026

For AST SpaceMobile, the launch could help erase painful memories of the loss of a previous satellite in April due to a botched launch by Blue Origin, Jeff Bezos’ rocket company.

From Barron's • Jun. 17, 2026

This led to a thorough familiarity with the European PC distribution business, and he worked then as AST Research's first European sales manager.

From Interviews (1998-2001) by Lebert, Marie