AST
1 Americanabbreviation
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Atlantic Standard Time
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automated screen trading (in securities)
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education advanced skills teacher
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.
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
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.