from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A unit of atmospheric pressure equal to one thousandth (10-3) of a bar. Standard atmospheric pressure at sea level is about 1,013 millibars.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A non-SI unit of pressure equal to 100 pascals, used primarily to report atmospheric pressure.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a unit of atmospheric pressure equal to one thousandth of a bar
milli- + bar (Wiktionary)