Definition of BAC

blood alcohol concentration

Keep scrolling for more

More Definitions for BAC

Medical Definition of BAC

1 bacterial artificial chromosome A significant advance in clone library construction for physical mapping and large-scale sequencing was the development of the bacterial artificial chromosome (BAC) vector in 1992. BAC vectors stably propagate DNA with insert size from 80 to 300 kb.— Lee Rowen et al., Science, 24 Oct. 1997
2 blood alcohol concentration At a BAC of .10 percent, sensory and motor functions become noticeably impaired. Speech becomes slurred, and people have difficulty coordinating arm and leg movements. — Rita L. Atkinson et al., Introduction to Psychology, 9th edition, 1987

Comments on BAC

What made you want to look up BAC? Please tell us where you read or heard it (including the quote, if possible).


characterized by aphorism

Get Word of the Day daily email!

Test Your Vocabulary

Farm Idioms Quiz

  • cow coming home
  • What does 'poke' refer to in the expression 'pig in a poke'?
True or False

Test your knowledge - and maybe learn something along the way.

Dictionary Devil

Test Your Knowledge - and learn some interesting things along the way.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!