Meaning of BAC

BAC

Pronunciation: [key]
  1. blood-alcohol concentration: the percentage of alcohol in the bloodstream: under the laws of most states, a BAC of 0.10 is the legal definition of intoxication, although a few states use a slightly lower percentage, as 0.08.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.