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AST

1 American  
Or A.S.T.,
  1. Atlantic Standard Time. standard time


-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.


AST British  

abbreviation

  1. Atlantic Standard Time

  2. automated screen trading (in securities)

  3. education advanced skills teacher

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of -ast

A variant of -ist ( def. ) after the vowel i ; from Greek -astēs

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

AST SpaceMobile already has partnership with mobile network operators and plans to deliver a commercial service in 2027, assuming that it can meet its launch requirements.

From MarketWatch • 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

That’s the market that SpaceX, Amazon, AST, and others are going after.

From Barron's • Apr. 15, 2026

Meanwhile, for AST SpaceMobile, the race to launch its own constellation of satellites is heating up.

From Barron's • Apr. 14, 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