Jump To:

• 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

---

-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

---

Etymology

Origin of -ast

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

Example Sentences

Amid the post-IPO excitement, Ottaway took a trip to Florida last week to watch SpaceX’s Falcon 9 rocket launch three AST SpaceMobile BlueBird satellites into orbit.

From MarketWatch • Jun. 23, 2026

He noted that it will be challenging for SpaceX to double its valuation from its current $2 trillion market cap when compared to a company like AST SpaceMobile, which has a $31.3 billion market cap.

From MarketWatch • Jun. 23, 2026

AST SpaceMobile has fallen 15% since Friday’s close through Tuesday’s close.

From Barron's • Jun. 17, 2026

SpaceX, a launch provider for AST SpaceMobile, is also a rival in space-based mobile broadband and saw its stock rise nearly 50% since its IPO.

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