from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A unit of pressure equal to one million bars
from The Century Dictionary and Cyclopedia
- n. A proposed unit of atmospheric pressure; a gaseous pressure such that the force on each centimeter of surface is one megadyne. The megabar is equivalent to the pressure exerted by 75,015 centimeters of mercury. It is 10 c. g. s. units of pressure.
From mega- + bar (Wiktionary)