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  • fab
    fab
    adjective
    fabulous.
  • FAB
    FAB
    abbreviation
    flavoured alcoholic beverage
  • F.A.B.
    F.A.B.
    interjection
    an expression of agreement to, or acknowledgment of, a command
Synonyms

fab

1 American  
[fab] / fæb /

adjective

Slang.

  1. fabulous.

fab 2 American  
[fab] / fæb /

noun

  1. a factory for manufacturing, especially one for manufacturing the semiconductor devices used in computers and other advanced electronics (often used attributively).

    The newly built fab will create jobs in the community.

    He is an advisor at a fab lab nearby.
FAB 1 British  

abbreviation

  1. flavoured alcoholic beverage

  2. fuel air bomb

"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
fab 2 British  
/ fæb /

adjective

  1. short for fabulous

"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

interjection

  1. an expression of approval or enthusiasm

"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
F.A.B. 3 British  

interjection

  1. an expression of agreement to, or acknowledgment of, a command

"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 fab1

First recorded in 1960–65; by shortening

Origin of fab2

First recorded in 1980–85; shortened from fabrication ( def. )

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.

A single chip-making factory, or fab, can cost upward of $20 billion and take years to build.

From The Wall Street Journal • Apr. 30, 2026

An "advanced technology fab" in Austin will have the facilities to design, manufacture, test and improve each chip, Musk said.

From Barron's • Apr. 23, 2026

The fab is a joint effort between Musk’s xAI, SpaceX, and Tesla, which he calls “the most epic chip building exercise in history.”

From Barron's • Apr. 7, 2026

Additionally, Arcuri said he doesn’t think Intel would’ve retaken ownership of the Ireland fab if it didn’t have “a good line of sight over potential foundry wins.”

From MarketWatch • Apr. 2, 2026

That fab song with the dusty flute in it by Men at Work was on.

From "Black Swan Green" by David Mitchell

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.